Segment Reporting - Information about Operations in Different Segments (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues		$ 667,418	$ 805,857	$ 1,046,537	$ 550,463	$ 806,400	$ 414,595	$ 476,083	$ 603,811	$ 3,070,275	[1]	$ 2,300,889	[1]	$ 2,658,932	[1]
Operating income (loss)		$ 13,539	$ 29,460	$ 41,632	$ 6,565	$ 25,949	$ (10,711)	$ 31,525	$ (38,209)	91,196		8,554		(456,745)
Capital expenditures	[2]									102,851		321,187		283,962
Depreciation and amortization										100,334		93,185		84,580
Drydock amortization										17,947		19,719		18,467
Operating Segments [Member] | AEA [Member]
Segment Reporting Information [Line Items]
Revenues	[1]									478,800		567,608		537,290
Operating income (loss)										(19,741)		(49,337)		(215,362)
Capital expenditures	[2]									13,715		53,431		22,177
Depreciation and amortization										43,006		34,494		26,788
Drydock amortization										12,554		11,453		7,417
Operating Segments [Member] | MEA [Member]
Segment Reporting Information [Line Items]
Revenues	[1]									1,134,555		795,666		1,167,804
Operating income (loss)										108,227		11,421		(169,224)
Capital expenditures	[2]									28,328		99,974		127,498
Depreciation and amortization										30,567		31,876		31,699
Drydock amortization										2,089		2,011		2,133
Operating Segments [Member] | ASA [Member]
Segment Reporting Information [Line Items]
Revenues	[1]									1,456,920		937,615		953,838
Operating income (loss)										15,563		55,412		(72,159)
Capital expenditures	[2]									60,220		154,735		117,060
Depreciation and amortization										16,880		19,020		18,693
Drydock amortization										3,304		6,255		8,917
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)										(12,853)		(8,942)
Capital expenditures	[2]									588		13,047		17,227
Depreciation and amortization										$ 9,881		$ 7,795		$ 7,400

[1] Intercompany transactions were not significant during 2015, 2014 and 2013.

[2] Total capital expenditures represent expenditures for which cash payments were made during the period. Capital expenditures for 2015 and 2014 include $14 million and $27 million of cash payments for accrued capital expenditures outstanding at December 31, 2014 and 2013, respectively. Capital expenditures for 2013 exclude approximately $48 million in accrued capital expenditures.