TAXES (Tables)

12 Months Ended

Mar. 31, 2013

Taxes [Abstract]

Schedule of deferred tax assets and liabilities

			March 31,
			2013		2012
Deferred tax assets:
	Foreign tax credits		$	10,483	$	13,064
	Accrued pension liability			29,951		28,621
	Maintenance and repair			10,291		17,454
	Accrued equity compensation			11,607		11,746
	Deferred revenue			2,212		2,455
	Other			15,079		9,519
		Total deferred tax assets	$	79,623	$	82,859
Deferred tax liabilities:
	Property and equipment			(189,482)		(172,232)
	Inventories			(11,068)		(11,598)
	Investment in unconsolidated affiliates			(11,681)		(28,098)
	Other			(6,912)		(7,927)
		Total deferred tax liabilities	$	(219,143)	$	(219,855)
Net deferred tax liabilities			$	(139,520)	$	(136,996)

Schedule of income before income tax, domestic and foreign

	Fiscal Year Ended March 31,
	2013		2012		2011
Domestic	$	2,472	$	(1,100)	$	439
Foreign		164,205		80,542		139,960
Total	$	166,677	$	79,442	$	140,399

Schedule of components of income tax expense (benefit)

The provision for income taxes for fiscal years 2013, 2012 and 2011 consisted of the following (in thousands):
			Fiscal Year Ended March 31,
			2013		2012		2011
	Current:
		Domestic	$	1,638	$	27	$	38
		Foreign		26,275		23,059		15,791
			$	27,913	$	23,086	$	15,829
	Deferred:
		Domestic	$	1,619	$	1,658	$	(6,207)
		Foreign		5,470		(10,543)		(2,518)
			$	7,089	$	(8,885)	$	(8,725)
	Total		$	35,002	$	14,201	$	7,104

Schedule of effective income tax rate reconciliation

The reconciliation of the U.S. Federal statutory tax rate to the effective income tax rate for the provision for income
taxes is shown below:
			Fiscal Year Ended March 31,
			2013			2012			2011
	Statutory rate			35.0	%		35.0	%		35.0	%
	Net foreign tax on non-U.S. earnings			14.4	%		20.4	%		10.8	%
	Foreign earnings indefinitely reinvested abroad			(28.4)	%		(26.3)	%		(27.3)	%
	Foreign earnings that are currently taxed in the U.S.			4.6	%		5.9	%		3.1	%
	Effect of reduction in U.K. corporate income tax rate			(1.7)	%		(2.3)	%		(1.1)	%
	Release of deferred tax liability on entity restructuring			0.0	%		0.0	%		(12.6)	%
	Dividend inclusion as a result of internal realignment			0.0	%		16.6	%		0.0	%
	Benefit of prior year foreign tax credits			0.0	%		(5.3)	%		0.0	%
	Benefit of current year foreign tax credits			(5.5)	%		(9.8)	%		0.0	%
	Tax reserve release			0.0	%		(7.7)	%		0.0	%
	Other, net			2.6	%		(8.6)	%		(2.8)	%
		Effective tax rate		21.0	%		17.9	%		5.1	%

Schedule of years open by jurisdiction

Jurisdiction	Years Open
U.S.	Fiscal year 2006 to present
U.K.	Fiscal year 2012 to present
Nigeria	Fiscal year 2005 to present

Rollforward of unrecognized tax benefits

	Fiscal Year Ended
	March 31,
	2013		2012
Unrecognized tax benefits – beginning of fiscal year	$	1,523	$	11,713
Increases for tax positions taken in prior years		348		321
Decreases for tax positions taken in prior years		(161)		(10,511)
Unrecognized tax benefits – end of fiscal year	$	1,710	$	1,523