| Schedule of Segment Reporting Information, by Segment | 
 
 The following tables summarize, for the periods indicated, operating results by reportable segment:       Cost of goods sold is directly related to product sales only. Revenues derived from co-promote revenue had no cost of goods sold.         |       |        |        |        |        |    Pharmaceutical   |        |        |        |        |        |        |        |     |       |        |        |        |        |    and   |        |        |        |        |        |        |        |     |       |        |    Dermatology   |        |    Biotechnology   |        |        |        |        |        |        |        |     |   ($ in thousands)   |        |    Products   |        |    Product   |        |        |        |        |        |        |        |     |    Three Months Ended June 30, 2018   |        |    Sales   |        |    Development   |        |    National   |        |    Consolidated   |        |     |   Net Revenue   |        |    $   |    6,689   |        |        |    126   |        |    $   |    57,019   |        |    $   |    63,834   |        |     |   Direct cost of goods   |        |        |    (1,668)   |        |        |       |        |        |       |        |        |    (1,668)   |        |     |   Sales and marketing costs   |        |        |    (2,910)   |        |        |       |        |        |       |        |        |    (2,910)   |        |     |   Research and development   |        |        |       |        |        |    (17,489)   |        |        |       |        |        |    (17,489)   |        |     |   General and administrative   |        |        |    (383)   |        |        |    (9,763)   |        |        |       |        |        |    (10,146)   |        |     |   National expenses   |        |        |       |        |        |       |        |        |    (56,218)   |        |        |    (56,218)   |        |     |   Segment income (loss) from operations   |        |        |    1,728   |        |        |    (27,126)   |        |        |    801   |        |        |    (24,597)   |        |     |   Segment assets   |        |    $   |    11,307   |        |    $   |    159,763   |        |        |    65,796   |        |    $   |    236,866   |        |          
     |       |        |        |        |        |    Pharmaceutical   |        |        |        |        |        |        |        |     |       |        |        |        |        |    And   |        |        |        |        |        |        |        |     |       |        |    Dermatology   |        |    Biotechnology   |        |        |        |        |        |        |        |     |   ($ in thousands)   |        |    Products   |        |    Product   |        |        |        |        |        |        |        |     |    Three Months Ended June 30, 2017   |        |    Sales   |        |    Development   |        |    National   |        |    Consolidated   |        |     |   Net Revenue   |        |    $   |    4,054   |        |    $   |    350   |        |    $   |    46,293   |        |    $   |    50,697   |        |     |   Direct cost of goods   |        |        |    (878)   |        |        |       |        |        |       |        |        |    (878)   |        |     |   Sales and marketing costs   |        |        |    (2,610)   |        |        |       |        |        |       |        |        |    (2,610)   |        |     |   Research and development   |        |        |       |        |        |    (13,483)   |        |        |       |        |        |    (13,483)   |        |     |   General and administrative   |        |        |    (293)   |        |        |    (8,231)   |        |        |       |        |        |    (8,524)   |        |     |   National expenses   |        |        |       |        |        |       |        |        |    (48,395)   |        |        |    (48,395)   |        |     |   Segment loss from operations   |        |        |    273   |        |        |    (21,364)   |        |        |    (2,102)   |        |        |    (23,193)   |        |     |   Segment assets   |        |    $   |    5,447   |        |    $   |    167,787   |        |    $   |    76,612   |        |    $   |    249,846   |        |          
     |       |        |        |        |        |    Pharmaceutical   |        |        |        |        |        |        |        |     |       |        |        |        |        |    And   |        |        |        |        |        |        |        |     |       |        |    Dermatology   |        |    Biotechnology   |        |        |        |        |        |        |        |     |   ($ in thousands)   |        |    Products   |        |    Product   |        |        |        |        |        |        |        |     |   Six Months Ended June 30, 2018   |        |    Sales   |        |    Development   |        |    National   |        |    Consolidated   |        |     |   Net Revenue   |        |    $   |    12,198   |        |    $   |    520   |        |    $   |    106,541   |        |    $   |    119,259   |        |     |   Direct cost of goods   |        |        |    (3,140)   |        |        |       |        |        |       |        |        |    (3,140)   |        |     |   Sales and marketing costs   |        |        |    (5,670)   |        |        |       |        |        |       |        |        |    (5,670)   |        |     |   Research and development   |        |        |       |        |        |    (42,544)   |        |        |       |        |        |    (42,544)   |        |     |   General and administrative   |        |        |    (783)   |        |        |    (20,151)   |        |        |       |        |        |    (20,934)   |        |     |   National expenses   |        |        |       |        |        |       |        |        |    (107,054)   |        |        |    (107,054)   |        |     |   Segment loss from operations   |        |    $   |    2,605   |        |        |    (62,175)   |        |    $   |    (513)   |        |    $   |    (60,083)   |        |     |   Segment assets   |        |    $   |    11,307   |        |        |    159,763   |        |    $   |    65,796   |        |    $   |    236,866   |        |           
     |       |        |        |        |        |    Pharmaceutical   |        |        |        |        |        |        |        |     |       |        |        |        |        |    And   |        |        |        |        |        |        |        |     |       |        |    Dermatology   |        |    Biotechnology   |        |        |        |        |        |        |        |     |   ($ in thousands)   |        |    Products   |        |    Product   |        |        |        |        |        |        |        |     |   Six Months Ended June 30, 2017   |        |    Sales   |        |    Development   |        |    National   |        |    Consolidated   |        |     |   Net Revenue   |        |    $   |    6,139   |        |    $   |    1,043   |        |    $   |    88,197   |        |    $   |    95,379   |        |     |   Direct cost of goods   |        |        |    (1,347)   |        |        |    -   |        |        |    -   |        |        |    (1,347)   |        |     |   Sales and marketing costs   |        |        |    (4,877)   |        |        |    -   |        |        |    -   |        |        |    (4,877)   |        |     |   Research and development   |        |        |       |        |        |    (21,887)   |        |        |    -   |        |        |    (21,887)   |        |     |   General and administrative   |        |        |    (612)   |        |        |    (15,897)   |        |        |    -   |        |        |    (16,509)   |        |     |   National expenses   |        |        |    -   |        |        |    -   |        |        |    (91,529)   |        |        |    (91,529)   |        |     |   Segment income (loss) from operations   |        |    $   |    (697)   |        |    $   |    (36,741)   |        |    $   |    (3,332)   |        |    $   |    (40,770)   |        |     |   Segment assets   |        |    $   |    5,447   |        |    $   |    167,787   |        |    $   |    76,612   |        |    $   |    249,846   |      
   |         
 |