Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Employee Stock Purchase Programs (Detail)

v3.6.0.2
Stockholders' Equity - Employee Stock Purchase Programs (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 12,128 $ 14,291 $ 5,546
Fortress Companies [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense [1],[2] 4,709 3,900 0
Employee Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 7,386 8,130 5,492
Executive Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense 0 2,228 0
Non-Employee Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 33 $ 33 $ 54
[1] Consists of approximately $28,000 of Avenue's compensation expenses, approximately $3.9 million of Checkpoint's compensation expense, approximately $0.5 million of JMC's compensation expenses, approximately $0.3 million of Helocyte's compensation expenses, approximately $7,000 of Cellvation's compensation expenses and approximately $42,000 of National Holdings' compensation expenses on stock and option grants for the year ended December 31, 2016
[2] Consists of approximately $50,400 of Avenue's compensation expenses, approximately $3.3 million of Checkpoint's compensation expense, and approximately $0.6 million of JMC's compensation expenses on stock grants for the year ended December 31, 2015.