Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014 Segment		Jun. 30, 2013
Segment Reporting Information [Line Items]
Number of business segments	4
Net sales
Net sales	$ 651,585		$ 682,242
Operating income (loss)
Operating income (loss)	(15,536)		(16,130)
Restructuring and impairments, net	(2,682)	[1]	(8,724)	[1]
Total operating income (loss)	(18,218)		(24,854)
Depreciation and Amortization
Depreciation and amortization	20,484		20,491
Capital expenditures
Capital expenditures	23,591		18,930
Transportation Americas
Net sales
Net sales	158,754		190,212
Operating income (loss)
Operating income (loss)	(20,652)		(15,944)
Restructuring and impairments, net	(208)		(7,339)
Depreciation and Amortization
Depreciation and amortization	6,208		6,980
Capital expenditures
Capital expenditures	8,660		5,386
Transportation Europe & ROW
Net sales
Net sales	191,331		186,437
Operating income (loss)
Operating income (loss)	448		(4,527)
Restructuring and impairments, net	410		77
Depreciation and Amortization
Depreciation and amortization	5,959		5,223
Capital expenditures
Capital expenditures	9,047		10,757
Industrial Energy Americas
Net sales
Net sales	107,847		101,617
Operating income (loss)
Operating income (loss)	5,348		4,627
Restructuring and impairments, net	(51)		(93)
Depreciation and Amortization
Depreciation and amortization	2,614		2,979
Capital expenditures
Capital expenditures	1,318		986
Industrial Energy Europe & ROW
Net sales
Net sales	193,653		203,976
Operating income (loss)
Operating income (loss)	4,427		6,078
Restructuring and impairments, net	(2,833)		(1,070)
Depreciation and Amortization
Depreciation and amortization	4,349		4,345
Capital expenditures
Capital expenditures	3,090		1,584
Unallocated corporate expenses
Operating income (loss)
Operating income (loss)	(5,107)		(6,364)
Restructuring and impairments, net	0		(299)
Depreciation and Amortization
Depreciation and amortization	1,354		964
Capital expenditures
Capital expenditures	$ 1,476		$ 217

[1] See Note 13 to the Consolidated Financial Statements.