CONDENSED 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, 2013	$ 342,031			$ (5,724)	$ (49,468)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss, net of tax	3,654			2,610	1,044
Ending balance at Sep. 30, 2013
Beginning balance at Mar. 31, 2013	342,031	460,914	(67,329)	(5,724)	(49,468)	3,638
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(69,802)		(69,557)			(245)
Restricted stock surrendered	(323)	(323)
Stock-based compensation	2,555	2,555
Other comprehensive loss, net of tax	5,065			3,499	1,566
Ending balance at Dec. 31, 2013	279,526	463,146	(136,886)	(2,225)	(47,902)	3,393
Beginning balance at Sep. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	13,017
Other comprehensive loss, net of tax	1,411			889	522
Ending balance at Dec. 31, 2013	279,526			(2,225)	(47,902)
Beginning balance at Mar. 31, 2014	276,888			(1,640)	(36,461)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss, net of tax	(3,252)			(4,079)	827
Ending balance at Sep. 30, 2014
Beginning balance at Mar. 31, 2014	276,888	465,682	(153,988)	(1,640)	(36,461)	3,295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(19,358)		(19,176)			(182)
Restricted stock surrendered	(145)	(145)
Stock-based compensation	2,397	2,397
Other comprehensive loss, net of tax	(4,934)			(6,174)	1,240
Acquisition of noncontrolling interest	112					112
Ending balance at Dec. 31, 2014	254,960	467,934	(173,164)	(7,814)	(35,221)	3,225
Beginning balance at Sep. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,122
Other comprehensive loss, net of tax	(1,682)			(2,095)	413
Ending balance at Dec. 31, 2014	$ 254,960			$ (7,814)	$ (35,221)