Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Dec. 16, 2019	Mar. 31, 2020
Loss Contingencies [Line Items]
Agreement to pay settlement	$ 650
Agreement settlement terms		whereby EMS agreed to pay the Company $0.65 million in a series of monthly payments through December 2021, and the both the Company and EMS agreed to release each from any other outstanding claims, which included $0.5 million of accounts payable the Company had previously recorded. The Rockingham Superior Court approved the parties’ stipulation of dismissal with prejudice on January 2, 2020.
Accounts Payable
Loss Contingencies [Line Items]
Outstanding claims for settlement	$ 500