Commitments and Contingencies - Additional Information (Detail) $ in Millions		12 Months Ended
	Sep. 19, 2016 USD ($) Installment	Dec. 31, 2019	Dec. 31, 2013 Number_Of_People	Jun. 27, 2016 USD ($)	Sep. 26, 2011 USD ($)
Leases [Abstract]
Amount received to start-up new facility	$ 1.0				$ 1.0
Minimum number of people to be employed | Number_Of_People			232
Time period to meet employment commitment			3 years
New deadline to meet employment commitment		Apr. 30, 2016
Funds to be repaid under the agreement	$ 0.3
Interest rate of funds under the agreement	0.00%
Number of equal quarterly installments | Installment	20
Grant earned under agreement				$ 0.7