CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Deferred Compensation Trust [Member]	Total
Balance at Mar. 31, 2009	$ 20,494	$ 72,800	$ 226,169	$ (62,889)	$ (13,897)		$ (353)	$ 242,324
Comprehensive income (loss):
Net earnings (loss)	0	0	(31,826)	0	0		0	(31,826)
Foreign-currency translation	0	0	0	22,917	0		0	22,917
Cash flow hedges, net of taxes	0	0	0	8,886	0		0	8,886
Changes in benefit plans:
Net actuarial loss, net of taxes	0	0	0	(17,221)	0		0	(17,221)
Net prior service costs, net of taxes	0	0	0	(2,098)	0		0	(2,098)
Total comprehensive income (loss)								(19,342)
Issuance of common stock	8,625	84,233						92,858
Purchase of treasury stock	0	0	0	0	(25)		0	(25)
Stock options and awards including related tax benefits	161	1,670	0	0	0		0	1,831
Forfeiture of stock awards	(20)	(339)	13	0	0		0	(346)
Amortization of deferred compensation under restricted stock plans	0	1,490	0	0	0		0	1,490
Investment in deferred compensation trust	0	0	0	0	0		9	9
Balance at Mar. 31, 2010	29,260	159,854	188,134	(50,268)	(13,922)		(344)	312,714
Balance at Mar. 31, 2010
Comprehensive income (loss):
Net earnings (loss)	0	0	5,233	0	0		0	5,233
Foreign-currency translation	0	0	0	16,470	0		0	16,470
Cash flow hedges, net of taxes	0	0	0	2,343	0		0	2,343
Changes in benefit plans:
Net actuarial loss, net of taxes	0	0	0	11,117	0		0	11,117
Net prior service costs, net of taxes	0	0	0	(2,516)	0		0	(2,516)
Total comprehensive income (loss)								32,647
Issuance of common stock	89	1,378						1,467
Purchase of treasury stock	0	0	0	0	(78)		0	(78)
Stock options and awards including related tax benefits	99	1,325	0	0	0		0	1,424
Forfeiture of stock awards	(8)	(85)	0	0	0		0	(93)
Amortization of deferred compensation under restricted stock plans	0	2,657	0	0	0		0	2,657
Investment in deferred compensation trust	0	1,230	0	0	0		344	1,574
Balance at Mar. 31, 2011	29,440	166,359	193,367	(22,854)	(14,000)		0	352,312
Balance at Mar. 31, 2011								352,312
Comprehensive income (loss):
Net earnings (loss)	0	0	38,461	0	0		0	38,461
Foreign-currency translation	0	0	0	(22,600)	0		0	(22,600)
Cash flow hedges, net of taxes	0	0	0	(3,449)	0		0	(3,449)
Changes in benefit plans:
Net actuarial loss, net of taxes	0	0	0	(39,437)	0		0	(39,437)
Net prior service costs, net of taxes	0	0	0	(1,966)	0		0	(1,966)
Total comprehensive income (loss)								(28,991)
Issuance of common stock	50	407						457
Purchase of treasury stock	0	0	0	0	(505)		0	(505)
Stock options and awards including related tax benefits	114	1,832	0	0	0		0	1,946
Forfeiture of stock awards	(4)	(58)	0	0	0		0	(62)
Amortization of deferred compensation under restricted stock plans	0	(250)	0	0	0		0	250
Noncontrolling interest						936		936
Net earnings attributable to noncontrolling interest						289		289
Balance at Mar. 31, 2012	$ 29,600	$ 171,634	$ 231,828	$ (90,306)	$ (14,505)	$ 1,225	$ 0	$ 326,132