Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income, Foreign Currency Translation Adjustment [Member]	Accumulated Other Comprehensive Income, Derivative Instruments [Member]	Accumulated Other Comprehensive Income, Defined Benefit Pension [Member]	Retained Earnings [Member]
Beginning balance at Mar. 31, 2011	$ 766,259	$ 26	$ (323,580)	$ 470,367	$ 23,914	$ (164)	$ (4,227)	$ 599,923
Beginning balance (in shares) at Mar. 31, 2011		25,561	7,643
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(247,734)							(247,734)
Foreign currency translation adjustment	(6,868)				(6,868)
Pension, net of taxes
Actuarial gain (loss)	(5,503)						(5,503)
Actuarial gain (loss) reclassified into results of operations	99						99
Derivative Instruments, net of taxes
Net change in fair value of cash flow hedges	(143)					(143)
Amounts reclassified into results of operations	154					154
Stock compensation expense	9,296			9,296
Dividends declared	(4,947)							(4,947)
Issuance of common stock	0	0		0
Issuance of common stock (in shares)		169
Repurchases of common stock	(15,292)		(15,292)
Repurchase of common stock (in shares)			607
Tax impact from equity awards	(937)			(937)
Ending balance at Mar. 31, 2012	494,384	26	(338,872)	478,726	17,046	(153)	(9,631)	347,242
Ending balance (in shares) at Mar. 31, 2012		25,730	8,250
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	28,806							28,806
Foreign currency translation adjustment	(4,237)				(4,237)
Pension, net of taxes
Actuarial gain (loss)	(1,823)						(1,823)
Actuarial gain (loss) reclassified into results of operations	273						273
Derivative Instruments, net of taxes
Net change in fair value of cash flow hedges	(375)					(375)
Amounts reclassified into results of operations	357					357
Stock compensation expense	7,712			7,712
Dividends declared	(5,273)							(5,273)
Issuance of common stock	0	0		0
Issuance of common stock (in shares)		168
Repurchases of common stock	(37,214)		(37,214)
Repurchase of common stock (in shares)			1,515
Tax impact from equity awards	(363)			(363)
Ending balance at Mar. 31, 2013	482,247	26	(376,086)	486,075	12,809	(171)	(11,181)	370,775
Ending balance (in shares) at Mar. 31, 2013	25,898	25,898	9,765
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(115,873)							(115,873)
Foreign currency translation adjustment	4,288				4,288
Pension, net of taxes
Actuarial gain (loss)	1,386						1,386
Actuarial gain (loss) reclassified into results of operations	283						283
Derivative Instruments, net of taxes
Net change in fair value of cash flow hedges	(1,212)					(1,212)
Amounts reclassified into results of operations	1,125					1,125
Stock compensation expense	6,589			6,589
Dividends declared	(5,685)							(5,685)
Issuance of common stock	0	0		0
Issuance of common stock (in shares)		238
Repurchases of common stock	(21,794)		(21,794)
Repurchase of common stock (in shares)			813
Proceeds from the exercise of stock options	988			988
Tax impact from equity awards	(1,225)			(1,225)
Ending balance at Mar. 31, 2014	$ 351,117	$ 26	$ (397,880)	$ 492,427	$ 17,097	$ (258)	$ (9,512)	$ 249,217
Ending balance (in shares) at Mar. 31, 2014	26,136	26,136	10,578