Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - share based compensation activity (Detail)

v3.19.1
Stockholders' Equity - share based compensation activity (Detail)
Dec. 31, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 13,176,146
Aevitas Therapeutics Inc 2018 Long Term Incentive Plan [Member] | Aevitas [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 2,000,000
Shares available 1,802,000
Avenue Therapeutics, Inc. 2015 Stock Plan [Member] | Avenue [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 2,000,000
Shares available 647,022
Caelum Biosciences Inc. 2017 Incentive Plan [Member] | Caelum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 3,000,000
Shares available 371,336
Cellvation Inc. 2016 Incentive Plan [Member] | Cellvation [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 2,000,000
Shares available 300,000
Checkpoint Therapeutics, Inc. Amended and Restated 2015 Stock Plan [Member] | Checkpoint [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 5,000,000
Shares available 2,345,457
Cyprium Therapeutics, Inc. 2017 Stock Plan [Member] | Cyprium [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 2,000,000
Shares available 2,000,000
DiaVax Biosciences, Inc. 2015 Incentive Plan [Member] | Helocyte [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 2,000,000
Shares available 341,667
Journey Medical Corporation 2015 Stock Plan [Member] | Journey [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 3,000,000
Shares available 434,792
Mustang Bio, Inc. 2016 Incentive Plan [Member] | Mustang [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 5,000,000
Shares available 2,049,689
FBIO Acquisition Corp. V 2017 Incentive Plan [Member] | Tamid [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares Authorized 2,000,000
Shares available 1,600,000