SEGMENT INFORMATION (Tables)

6 Months Ended

Sep. 30, 2011

Segments [Abstract]

Schedule of revenue by segment

			Three Months Ended September 30,				Six Months Ended September 30,
			2011		2010		2011		2010
Segment gross revenue from external clients:
	Europe		$	140,244	$	117,243	$	274,524	$	218,764
	West Africa			64,041		58,110		118,548		117,206
	North America			47,794		55,246		91,961		108,009
	Australia			33,323		37,364		78,618		72,655
	Other International			36,147		36,295		71,614		69,114
	Corporate and other			9,443		8,301		16,832		19,049
		Total segment gross revenue	$	330,992	$	312,559	$	652,097	$	604,797
Intrasegment gross revenue:
	Europe		$	(23)	$	352	$	235	$	522
	West Africa			0		0		0		0
	North America			463		35		538		83
	Australia			117		0		235		0
	Other International			0		0		0		0
	Corporate and other			120		120		(324)		214
		Total intrasegment gross revenue	$	677	$	507	$	684	$	819
Consolidated gross revenue reconciliation:
	Europe		$	140,221	$	117,595	$	274,759	$	219,286
	West Africa			64,041		58,110		118,548		117,206
	North America			48,257		55,281		92,499		108,092
	Australia			33,440		37,364		78,853		72,655
	Other International			36,147		36,295		71,614		69,114
	Corporate and other			9,563		8,421		16,508		19,263
	Intrasegment eliminations			(677)		(507)		(684)		(819)
		Total consolidated gross revenue	$	330,992	$	312,559	$	652,097	$	604,797

Schedule of earnings from unconsolidated affiliates

				Three Months Ended September 30,				Six Months Ended September 30,
				2011		2010		2011		2010
Earnings from unconsolidated affiliates, net of losses – equity method
	investments:
		Europe		$	2,466	$	2,789	$	5,324	$	4,740
		Other International			(6,510)		1,927		(3,375)		(670)
		Corporate and other			7		0		7		(56)
			Total earnings from unconsolidated affiliates, net of losses – equity method investments	$	(4,037)	$	4,716	$	1,956	$	4,014

Schedule of consolidated operating income loss

			Three Months Ended September 30,				Six Months Ended September 30,
			2011		2010		2011		2010
Consolidated operating income (loss) reconciliation:
	Europe		$	23,586	$	21,612	$	46,835	$	39,911
	West Africa			16,120		17,158		27,351		32,794
	North America			2,571		8,904		4,155		14,212
	Australia			576		6,094		5,100		14,046
	Other International			2,089		11,102		13,999		13,367
	Corporate and other			(33,736)		(13,208)		(51,245)		(24,707)
	Gain (loss) on disposal of assets			(1,611)		1,897		(195)		3,615
		Total consolidated operating income	$	9,595	$	53,559	$	46,000	$	93,238

Schedule of depreciation and amortization

			Three Months Ended September 30,				Six Months Ended September 30,
			2011		2010		2011		2010
Depreciation and amortization:
	Europe		$	8,015	$	7,054	$	15,922	$	12,207
	West Africa			3,244		3,801		6,514		8,576
	North America			5,947		2,737		9,634		5,445
	Australia			2,816		2,704		5,938		5,357
	Other International			4,070		3,114		8,033		6,277
	Corporate and other			1,339		1,558		2,098		2,437
		Total depreciation and amortization	$	25,431	$	20,968	$	48,139	$	40,299

Schedule of identifiable assets

			September 30,		March 31,
			2011		2011
Identifiable assets:
	Europe		$	848,354	$	856,448
	West Africa			385,831		354,154
	North America			278,371		302,081
	Australia			290,694		288,036
	Other International			619,074		602,243
	Corporate and other			278,094		272,392
		Total identifiable assets (1)	$	2,700,418	$	2,675,354

Schedule of equity method investments

				September 30,		March 31,
				2011		2011
Investments in unconsolidated affiliates – equity method investments:
	Europe			$	11,807	$	11,508
	Other International				183,810		190,736
		Total investments in unconsolidated affiliates – equity method		$	195,617	$	202,244
			investments