XML 54 R42.htm IDEA: XBRL DOCUMENT v3.19.1
Commitments and Contingencies - Additional Information (Detail)
 1 Months Ended 3 Months Ended
Dec. 07, 2018
USD ($)
ft²
Jul. 31, 2017
USD ($)
ft²
Mar. 31, 2019
USD ($)
Commitments And Contingencies [Line Items]      
Laboratory and office space to be leased | ft²   41,346  
Operating lease annual rent   $ 3,100,000  
Term of lease   10 years  
Tenant improvement investment   $ 1,600,000  
Letter of credit   $ 1,000,000  
Renewal term of lease   5 years  
Lessee, operating lease, existence of option to extend   true true
Lessee, operating lease, existence of option to terminate   true  
Cash paid included in operating cash flows     $ 800,000
Total right-of-use asset for finance leases     $ 900,000
Master Services Agreement | Azzur Group, LLC      
Commitments And Contingencies [Line Items]      
Access and use of space under agreement | ft² 700    
Term of agreement 44 months    
Agreement expiration date Dec. 31, 2022    
Term of prior terminate written notice 4 months    
Master Services Agreement | Maximum | Azzur Group, LLC      
Commitments And Contingencies [Line Items]      
Estimated project costs $ 4,800,000