Segment Reporting - Information about Operations in Different Segments (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 414,595,000	$ 686,856,000	$ 1,494,489,000	$ 2,141,594,000
Operating income (loss)	(14,143,000)	(52,654,000)	(27,693,000)	(149,157,000)
Capital expenditures	61,569,000	80,922,000	216,526,000	225,397,000
Depreciation and amortization	22,408,000	20,796,000	68,655,000	60,114,000
Drydock amortization	5,601,000	4,248,000	15,567,000	14,179,000
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenue	205,427,000	190,231,000	481,234,000	746,122,000
Operating income (loss)	19,626,000	(37,663,000)	26,151,000	17,894,000
Capital expenditures	5,316,000	42,568,000	83,613,000	87,753,000
Depreciation and amortization	5,061,000	4,667,000	15,048,000	14,204,000
Drydock amortization	1,938,000	1,927,000	5,462,000	6,976,000
Middle East [Member]
Segment Reporting Information [Line Items]
Revenue	92,168,000	379,754,000	588,822,000	943,863,000
Operating income (loss)	(23,606,000)	17,399,000	(20,170,000)	(69,600,000)
Capital expenditures	47,408,000	25,516,000	78,107,000	63,459,000
Depreciation and amortization	7,263,000	8,293,000	24,815,000	22,319,000
Drydock amortization	501,000	520,000	1,398,000	1,586,000
Americas [Member]
Segment Reporting Information [Line Items]
Revenue	117,000,000	116,871,000	424,433,000	451,609,000
Operating income (loss)	(8,265,000)	(32,390,000)	(28,951,000)	(97,451,000)
Capital expenditures	6,967,000	4,023,000	46,504,000	60,336,000
Depreciation and amortization	7,869,000	5,999,000	23,201,000	17,985,000
Drydock amortization	3,162,000	1,801,000	8,707,000	5,617,000
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(1,898,000)		(4,723,000)
Capital expenditures	1,878,000	8,815,000	8,302,000	13,849,000
Depreciation and amortization	$ 2,215,000	$ 1,837,000	$ 5,591,000	$ 5,606,000