Schedule I - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Total current assets	$ 507,437	$ 169,149
Total assets	2,566,358	2,300,518
Current liabilities:
Other accrued liabilities	50,950	81,841
Total current liabilities	317,121	402,660
Total liabilities	2,672,161	2,089,626
Commitments and contingencies
Stockholders’ (Deficit) Equity:
Preferred stock, $0.01 par value—authorized, 100,000,000 shares, no shares issued or outstanding at December 31, 2020 and 2019
Common stock, $0.01 par value—authorized, 1,000,000,000 shares; 94,652,248 and 94,044,203 shares issued at December 31, 2020 and 2019, respectively	946	940
Additional paid-in capital	680,360	673,893
Accumulated other comprehensive loss		(1,559)
Accumulated deficit	(371,800)	(59,479)
Treasury stock, at cost (16,260,248 and 15,790,463 shares at December 31, 2020 and 2019, respectively)	(415,309)	(402,903)
Total stockholders’ (deficit) equity	(105,803)	210,892	$ 265,194	$ 287,466
Total liabilities and stockholders’ (deficit) equity	2,566,358	2,300,518
Parent Company [Member]
Current assets:
Cash	455	169
Total current assets	455	169
Investment in wholly owned subsidiary		210,892
Total assets	455	211,061
Current liabilities:
Loss in excess of investment in wholly-owned subsidiary	105,803
Other accrued liabilities	455	169
Total current liabilities	106,258	169
Total liabilities	106,258	169
Commitments and contingencies
Stockholders’ (Deficit) Equity:
Preferred stock, $0.01 par value—authorized, 100,000,000 shares, no shares issued or outstanding at December 31, 2020 and 2019
Common stock, $0.01 par value—authorized, 1,000,000,000 shares; 94,652,248 and 94,044,203 shares issued at December 31, 2020 and 2019, respectively	946	940
Additional paid-in capital	680,360	673,893
Accumulated other comprehensive loss		(1,559)
Accumulated deficit	(371,800)	(59,479)
Treasury stock, at cost (16,260,248 and 15,790,463 shares at December 31, 2020 and 2019, respectively)	(415,309)	(402,903)
Total stockholders’ (deficit) equity	(105,803)	210,892
Total liabilities and stockholders’ (deficit) equity	$ 455	$ 211,061