Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 119,028	$ 113,761	$ 78,532	$ 116,213	$ 110,676	$ 120,459	$ 130,851	$ 127,528
Cost of sales (exclusive of depreciation and amortization)	93,982	90,076	65,058	94,478	91,816	96,654	102,643	101,369	$ 343,594	$ 392,482	$ 413,394
Income (loss) from continuing operations	(15,487)	1,640	(17,566)	(108,077)	(9,943)	(4,836)	(4,453)	(11,517)	(139,490)	(30,749)	(221,220)
Income (loss) from discontinued operations, net of tax	162,864	20,330	(4,182)	(140,114)	(4,142)	(1,019)	(2,830)	(8,001)	38,898	(15,992)	(41,767)
Net income (loss)	147,377	21,970	(21,748)	(248,191)	(14,085)	(5,855)	(7,283)	(19,518)
Comprehensive income (loss)	$ 170,440	$ 31,851	$ (19,371)	$ (272,690)	$ (4,210)	$ (17,976)	$ (15,742)	$ (22,053)	$ (89,770)	$ (59,981)	$ (276,596)
Basic loss from continuing operations per common share (in usd per share)	$ (0.44)	$ (0.04)	$ (0.49)	$ (2.64)	$ (0.25)	$ (0.12)	$ (0.11)	$ (0.27)	$ (3.60)	$ (0.75)	$ (6.98)
Basic net income (loss) per common share (in usd per share)	3.41	0.45	(0.59)	(5.96)	(0.35)	(0.14)	(0.17)	(0.47)	(2.68)	(1.13)	(8.30)
Diluted loss from continuing operations per common share (in usd per share)	(0.44)	(0.04)	(0.49)	(2.64)	(0.25)	(0.12)	(0.11)	(0.27)	(3.60)	(0.75)	(6.98)
Diluted net income (loss) per common share (in usd per share)	$ 3.41	$ 0.45	$ (0.59)	$ (5.96)	$ (0.35)	$ (0.14)	$ (0.17)	$ (0.47)	$ (2.68)	$ (1.13)	$ (8.30)