CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) [Abstract]
Net sales	$ 339,922	$ 397,290	$ 690,298	$ 815,153
Cost of sales	287,326	334,916	586,117	682,977
Gross profit	52,596	62,374	104,181	132,176
Selling, general and administrative expenses	41,318	50,176	84,472	99,720
Impairment charges	16,748	0	16,748	0
Restructuring and repositioning expenses	1,317	0	5,877	0
(Loss) income from operations	(6,787)	12,198	(2,916)	32,456
Interest expense	3,370	3,297	6,409	6,287
Other (income) expense - net	(139)	6,223	(305)	5,884
(Loss) earnings from continuing operations before income taxes	(10,018)	2,678	(9,020)	20,285
Provision for income taxes	1,830	1,678	3,883	6,719
(Loss) earnings from continuing operations	(11,848)	1,000	(12,903)	13,566
(Loss) earnings from discontinued operations (net of income taxes)	(105)	373	72	373
Net (loss) earnings	(11,953)	1,373	(12,831)	13,939
Less: Net earnings attributable to noncontrolling interest	267	38	568	29
Net (loss) earnings attributable to Modine	$ (12,220)	$ 1,335	$ (13,399)	$ 13,910
(Loss) earnings per share from continuing operations attributable to Modine shareholders:
Basic (in dollars per share)	$ (0.26)	$ 0.02	$ (0.29)	$ 0.29
Diluted (in dollars per share)	$ (0.26)	$ 0.02	$ (0.29)	$ 0.29
Net (loss) earnings per share attributable to Modine shareholders:
Basic (in dollars per share)	$ (0.26)	$ 0.03	$ (0.29)	$ 0.30
Diluted (in dollars per share)	$ (0.26)	$ 0.03	$ (0.29)	$ 0.30
Weighted average shares outstanding:
Basic (in shares)	46,584	46,477	46,565	46,419
Diluted (in shares)	46,584	46,858	46,565	46,919