Income Taxes - Effective Income Tax Rate Reconciliation (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. statutory rate	35.00%	35.00%	35.00%
Effect of foreign operations	4.60%	5.90%	0.70%
State income taxes, net of Federal income tax	1.90%	0.90%	1.50%
Change in enacted tax laws	(0.20%)	0.20%	0.00%
Gains on asset sales, net	(0.00%)	(0.20%)	(8.30%)
Impairment	(2.10%)	(12.20%)	0.00%
Valuation allowance against previously benefitted deferred tax assets	(97.30%)	(3.10%)	0.60%
Benefit of legal entity restructuring	0.00%	3.50%	0.00%
Other	0.40%	0.50%	1.00%
Total	(57.70%)	30.50%	30.50%