SEGMENT INFORMATION (Tables)

6 Months Ended

Sep. 30, 2012

Segments [Abstract]

Schedule of revenue by segment

			Three Months Ended September 30,				Six Months Ended September 30,
			2012		2011		2012		2011
Segment gross revenue from external clients:
	Europe		$	154,111	$	140,244	$	308,068	$	274,524
	West Africa			68,217		64,041		138,671		118,548
	North America			57,321		47,794		110,031		91,961
	Australia			44,839		33,323		89,341		78,618
	Other International			32,139		36,147		65,614		71,614
	Corporate and other			9,127		9,443		16,637		16,832
		Total segment gross revenue	$	365,754	$	330,992	$	728,362	$	652,097
Intrasegment gross revenue:
	Europe		$	2	$	(23)	$	65	$	235
	West Africa			0		0		0		0
	North America			54		463		250		538
	Australia			0		117		0		235
	Other International			0		0		0		0
	Corporate and other			591		120		711		(324)
		Total intrasegment gross revenue	$	647	$	677	$	1,026	$	684
Consolidated gross revenue reconciliation:
	Europe		$	154,113	$	140,221	$	308,133	$	274,759
	West Africa			68,217		64,041		138,671		118,548
	North America			57,375		48,257		110,281		92,499
	Australia			44,839		33,440		89,341		78,853
	Other International			32,139		36,147		65,614		71,614
	Corporate and other			9,718		9,563		17,348		16,508
	Intrasegment eliminations			(647)		(677)		(1,026)		(684)
		Total consolidated gross revenue	$	365,754	$	330,992	$	728,362	$	652,097

Schedule of earnings from unconsolidated affiliates

				Three Months Ended September 30,				Six Months Ended September 30,
				2012		2011		2012		2011
Earnings from unconsolidated affiliates, net of losses – equity method
	investments:
		Europe		$	2,368	$	2,466	$	4,374	$	5,324
		Other International			4,626		(6,510)		4,609		(3,375)
		Corporate and other			0		7		0		7
			Total earnings from unconsolidated affiliates, net of losses – equity method investments	$	6,994	$	(4,037)	$	8,983	$	1,956

Schedule of consolidated operating income loss

			Three Months Ended September 30,				Six Months Ended September 30,
			2012		2011		2012		2011
Consolidated operating income (loss) reconciliation:
	Europe		$	27,008	$	23,586	$	48,884	$	46,835
	West Africa			13,430		16,120		29,561		27,351
	North America			6,130		2,571		12,605		4,155
	Australia			6,829		576		13,338		5,100
	Other International			10,354		2,089		17,741		13,999
	Corporate and other			(15,161)		(33,736)		(28,231)		(51,245)
	Gain (loss) on disposal of assets			(1,262)		(1,611)		(6,577)		(195)
		Total consolidated operating income	$	47,328	$	9,595	$	87,321	$	46,000

Schedule of depreciation and amortization

			Three Months Ended September 30,				Three Months Ended September 30,
			2012		2011		2012		2011
Depreciation and amortization:
	Europe		$	8,444	$	8,015	$	16,008	$	15,922
	West Africa			3,051		3,244		6,193		6,514
	North America			3,107		5,947		6,373		9,634
	Australia			2,504		2,816		4,987		5,938
	Other International			5,300		4,070		9,333		8,033
	Corporate and other			915		1,339		1,799		2,098
		Total depreciation and amortization	$	23,321	$	25,431	$	44,693	$	48,139

Schedule of identifiable assets

			September 30,		March 31,
			2012		2012
Identifiable assets:
	Europe		$	862,758	$	779,160
	West Africa			383,879		376,903
	North America			315,987		276,074
	Australia			212,824		295,895
	Other International			551,503		602,174
	Corporate and other			458,517		410,157
		Total identifiable assets (1)	$	2,785,468	$	2,740,363

Schedule of equity method investments

				September 30,		March 31,
				2012		2012
Investments in unconsolidated affiliates – equity method investments:
	Europe			$	9,452	$	11,410
	Other International				188,802		184,922
	Corporate and other				9,532		2,378
		Total investments in unconsolidated affiliates – equity method		$	207,786	$	198,710
			investments