STATEMENTS OF CONSOLIDATED STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Retained Deficit [Member]	Currency Translation Adjustment [Member]	Pensions, Net of Tax [Member]	Noncontrolling Interest [Member]
Beginning balance at Mar. 31, 2009	$ 330,780	$ 468,195	$ (128,409)	$ (1,870)	$ (11,255)	$ 4,119
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	79,946	0	79,167	0	0	779
Stock warrants issued	16,821	16,821	0	0	0	0
Call option related to convertible debentures, net of tax of $14,978	(24,440)	(24,440)	0	0	0	0
Restricted stock surrendered	(249)	(249)	0	0	0	0
Exercise of employee stock options	75	75	0	0	0	0
Stock-based compensation	569	569	0	0	0	0
Noncontrolling interest dividend paid	(360)	0	0	0	0	(360)
Conversion of foreign currency financial statements	(1,837)	0	0	(1,821)	0	(16)
Adjustment in pensions	(6,383)	0	0	0	(6,383)	0
Ending balance at Mar. 31, 2010	394,922	460,971	(49,242)	(3,691)	(17,638)	4,522
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(72,148)	0	(71,551)	0	0	(597)
Restricted stock surrendered	(582)	(582)	0	0	0	0
Exercise of employee stock options	130	130	0	0	0	0
Stock-based compensation	3,888	3,888	0	0	0	0
Shares purchased	(9,042)	(9,042)	0	0	0	0
Purchase of additional investment in subsidiary	(380)	44	0	0	0	(424)
Noncontrolling interest dividend paid	(284)	0	0	0	0	(284)
Conversion of foreign currency financial statements	2,297	0	0	2,315	0	(18)
Adjustment in pensions	(2,789)	0	0	0	(2,789)	0
Ending balance at Mar. 31, 2011	316,012	455,409	(120,793)	(1,376)	(20,427)	3,199
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	29,191	0	29,451	0	0	(260)
Restricted stock surrendered	(198)	(198)	0	0	0	0
Stock-based compensation	2,286	2,286	0	0	0	0
Conversion of foreign currency financial statements	(1,546)	0	0	(1,546)	0	0
Adjustment in pensions	(15,324)	0	0	0	(15,324)	0
Ending balance at Mar. 31, 2012	$ 330,421	$ 457,497	$ (91,342)	$ (2,922)	$ (35,751)	$ 2,939