Income Taxes - Effective Income Tax Rate Reconciliation (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S. statutory rate	35.00%	35.00%	35.00%
Effect of foreign operations	5.90%	0.70%	5.90%
State income taxes, net of Federal income tax	0.90%	1.50%	0.10%
Change in enacted tax laws	0.20%	0.00%	(14.80%)
Gains on asset sales, net	(0.20%)	(8.30%)	(15.60%)
Goodwill impairment	(12.20%)	0.00%	0.00%
Valuation allowance against previously benefitted deferred tax assets	(3.10%)	0.60%	1.00%
Benefit of legal entity restructuring	3.50%	0.00%	0.00%
Other	0.50%	1.00%	0.70%
Total	30.50%	30.50%	12.30%