Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Valuation allowance for deferred tax assets	$ (336,000)
Deferred tax assets	18,822	$ 24,827
Deferred tax liabilities:
Total deferred tax liabilities	25,101	24,881
Net deferred tax liability	(6,279)	(54)
Deferred tax assets and liabilities in the accompanying consolidated balance sheets include:
Current deferred tax assets	8,133	7,514
Noncurrent deferred tax assets	10,689	17,313
Deferred tax assets	18,822	24,827
Current deferred tax liabilities	17,273	19,753
Noncurrent deferred tax liabilities	7,828	5,128
Total deferred tax liabilities	25,101	24,881
Net deferred tax liability	(6,279)	(54)
Reportable Legal Entities [Member]
Deferred tax assets:
Pension liability	12,033	10,976
Accrued liabilities for incentive compensation	21,640	19,015
Net operating loss carryforward	325,636	294,722
State net operating loss carryforward	24,367	21,296
Long-term contracts	4,312	39,817
Other	2,060	1,549
Total deferred tax assets	390,048	387,375
Valuation allowance for deferred tax assets	(336,146)	(331,589)
Deferred tax assets	53,902	55,786
Deferred tax liabilities:
Property, plant and equipment	34,419	28,815
Prepaid drydock	7,639	10,280
Investments in joint ventures and affiliated companies	14,960	13,583
Unrealized exchange gains and other	3,163	3,162
Total deferred tax liabilities	60,181	55,840
Deferred tax assets and liabilities in the accompanying consolidated balance sheets include:
Deferred tax assets	53,902	55,786
Total deferred tax liabilities	$ 60,181	$ 55,840