Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail)
1 Months Ended 3 Months Ended
Feb. 28, 2018
Mar. 31, 2015
USD ($)
Feb. 28, 2015
Mar. 31, 2018
USD ($)
ft²
Commitment And Contingencies [Line Items]        
Area of corporate headquarters and manufacturing facility | ft²       57,000
Extended lease term   Apr. 30, 2020    
Provisions for tenant improvement allowance, maximum   $ 400,000    
Capital lease agreement term for information technology equipment     30 months  
Capital lease agreement extended additional lease term for information technology equipment 18 months      
Purchase commitments pending       $ 13,200,000
Employee Arrangements and Other Compensation        
Commitment And Contingencies [Line Items]        
Change in control, if occurs, may require severance benefits payable       1,700,000
Accrued for performance bonuses       $ 100,000