CONDENSED STATEMENTS OF CONSOLIDATED STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Deficit [Member]	Currency Translation Adjustment [Member]	Pensions, Net of Tax [Member]	Noncontrolling Interest [Member]
Beginning balance at Mar. 31, 2014	$ 248,597	$ 465,682	$ (182,054)	$ (1,640)	$ (36,686)	$ 3,295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(28,723)		(28,541)			(182)
Acquisition of noncontrolling interest	112					112
Restricted stock surrendered	(145)	(145)
Stock-based compensation	2,397	2,397
Other comprehensive loss, net of tax	(4,934)			(6,174)	1,240
Ending balance at Dec. 31, 2014	217,304	467,934	(210,595)	(7,814)	(35,446)	3,225
Beginning balance at Mar. 31, 2015	197,268	468,564	(208,184)	(14,154)	(52,232)	3,274
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(36,196)		(36,081)			(115)
Increase in capitalization of non-controlling interest	198					198
Restricted stock surrendered	(159)	(159)
Stock-based compensation	2,075	2,075
Other comprehensive loss, net of tax	10,575			(432)	11,007
Ending balance at Dec. 31, 2015	$ 173,761	$ 470,480	$ (244,265)	$ (14,586)	$ (41,225)	$ 3,357