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Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Moss & Associates LLC \| Customary Payments for Remodeling of Corporate Headquarters
Related Party Transaction [Line Items]
Payment for related party transaction		$ 53
Greenberg Traurig, P.A. \| Customary Fees for Legal Services
Related Party Transaction [Line Items]
Payment for related party transaction	$ 0	4
Amount payable to related party	0		$ 0
Carrier and Its Affiliates \| Supplier Concentration Risk
Related Party Transaction [Line Items]
Amount payable to Carrier and its affiliates, net of receivables	101,000		$ 71,000
Revenues from sales to Carrier and its affiliates	$ 21,000	$ 16,000
Carrier and Its Affiliates \| Supplier Concentration Risk \| Cost of Goods, Total
Related Party Transaction [Line Items]
Percentage of purchases from key suppliers	61.00%	62.00%