Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012
Summary of other intangible assets
Accumulated Amortization	$ 8,403	$ 7,743
Total Other Intangible Assets, net, Gross Carrying Value	46,966	46,966
Total Other Intangible Assets, net, Total Net Book Value	38,563	39,223
Trademarks/Tradenames not subject to amortization [Member]
Summary of other intangible assets
Trademarks/Tradenames not subject to amortization	1,266	1,266
Accumulated Amortization
Trademarks subject to amortization (5 years) [Member]
Summary of other intangible assets
Gross Carrying Value, subject to amortization	2,100	2,100
Accumulated Amortization	770	665
Total Net Book Value, subject to amortization	1,330	1,435
Customer Relationships (20 years) [Member]
Summary of other intangible assets
Gross Carrying Value, subject to amortization	43,200	43,200
Accumulated Amortization	7,308	6,767
Total Net Book Value, subject to amortization	35,892	36,433
Intellectual Property (7 years) [Member]
Summary of other intangible assets
Gross Carrying Value, subject to amortization	400	400
Accumulated Amortization	325	311
Total Net Book Value, subject to amortization	$ 75	$ 89