Summary of Significant Accounting Policies - Company's Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Product and related sales									$ 101,344	$ 75,154	$ 50,460
RefrigerantSide~®~ Services									4,137	4,568	5,350
Total	$ 7,779	$ 34,930	$ 34,605	$ 28,167	$ 7,300	$ 21,682	$ 28,637	$ 22,103	$ 105,481	$ 79,722	$ 55,810