Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.19.1
Commitments and Contingencies - Additional Information (Detail)
€ in Millions
1 Months Ended 12 Months Ended
Jul. 12, 2018
USD ($)
Sep. 14, 2016
USD ($)
Oct. 03, 2014
USD ($)
Aug. 31, 2018
USD ($)
ft²
Nov. 30, 2017
USD ($)
Nov. 30, 2017
USD ($)
Oct. 31, 2017
USD ($)
Oct. 27, 2017
USD ($)
ft²
Jun. 30, 2017
USD ($)
ft²
Oct. 31, 2015
USD ($)
ft²
Oct. 30, 2015
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2012
USD ($)
ft²
Dec. 31, 2019
USD ($)
Dec. 31, 2018
EUR (€)
Dec. 31, 2017
EUR (€)
Mar. 20, 2012
EUR (€)
Operating Leased Assets [Line Items]                                    
Land Subject to Ground Leases | ft²       3,681         2,295 6,100       8,700        
Operating Leases, Rent Expense     $ 2,500,000           $ 55,000 $ 200,000       $ 100,000        
Operating Leases, Rent Expense, Net                       $ 1,700,000 $ 1,200,000          
Lease Expiration Period                     5 years              
Lease Expiration Date                       Nov. 30, 2020            
Loss Contingency, Damages Sought, Value $ 3,300,000                                  
Accounts Payable and Accrued Liabilities, Current                       $ 34,067,000 27,412,000          
Legal Fees   $ 25,000,000                                
Administration Fee Payable                       39,500            
Operating Leases, Rent Expense, Minimum Rentals       $ 94,000                            
Scenario, Forecast [Member]                                    
Operating Leased Assets [Line Items]                                    
Accounts Payable and Accrued Liabilities, Current                             $ 300,000      
Letter of Credit [Member]                                    
Operating Leased Assets [Line Items]                                    
Increase (Decrease) in Security Deposits               $ 1,000,000                    
General and Administrative Expense [Member]                                    
Operating Leased Assets [Line Items]                                    
Legal Fees           $ 2,200,000                        
New York, NY office space [Member]                                    
Operating Leased Assets [Line Items]                                    
Lease Expiration Period     15 years                              
Waltham office space [Member]                                    
Operating Leased Assets [Line Items]                                    
Operating Leases, Rent Expense                       $ 200,000 200,000          
Opus Point Partners Management, LLC [Member]                                    
Operating Leased Assets [Line Items]                                    
Operating Leases, Rent Expense     $ 300,000                              
Percentage of Rentable Area     10.00%                 9.00%            
Prepaid Rent                       $ 900,000 1,000,000          
TG Therapeutics, Inc [Member]                                    
Operating Leased Assets [Line Items]                                    
Operating Leases, Rent Expense     $ 1,100,000                              
Percentage of Rentable Area     45.00%                 46.00%            
Journey Medical Corporation [Member]                                    
Operating Leased Assets [Line Items]                                    
Operating Leases, Rent Expense, Net                       $ 100,000 100,000          
Mustang [Member]                                    
Operating Leased Assets [Line Items]                                    
Land Subject to Ground Leases | ft²               27,043                    
Operating Leases, Rent Expense               $ 600,000                    
Operating Leases, Rent Expense, Net                       400,000 100,000          
Payments for Legal Settlements         $ 200,000 200,000                        
Operating Leases, Rent Expense, Sublease Rentals               3,600,000                    
Land Improvements               3,500,000                    
Security Deposit               800,000                    
Increase (Decrease) in Security Deposits               1,300,000                    
Litigation Settlement, Expense           $ 2,000,000                        
Mustang [Member] | Cash [Member]                                    
Operating Leased Assets [Line Items]                                    
Security Deposit               300,000                    
Increase (Decrease) in Security Deposits             $ 300,000                      
Mustang [Member] | Letter of Credit [Member]                                    
Operating Leased Assets [Line Items]                                    
Increase (Decrease) in Security Deposits               $ 500,000                    
Dr.Falk Pharma [Member]                                    
Operating Leased Assets [Line Items]                                    
Contractual Obligation | €                                   € 2.5
Accounts Payable and Accrued Liabilities, Current                       $ 300,000 $ 3,000,000     € 2.5 € 2.5