Quarterly report pursuant to Section 13 or 15(d)

Restructuring Costs - Additional Information (Detail)

v3.19.2
Restructuring Costs - Additional Information (Detail)
3 Months Ended
Jun. 30, 2019
USD ($)
Employee Severance [Member]  
Restructuring Cost And Reserve [Line Items]  
Payments for restructuring $ 0
Employee Severance [Member] | Operating Expense [Member] | Accounts Payable and Accrued Expenses [Member]  
Restructuring Cost And Reserve [Line Items]  
Severance expenses 1,200,000
Stock Compensation Expense [Member] | Operating Expense [Member]  
Restructuring Cost And Reserve [Line Items]  
Non-cash settlements $ 300,000