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Restructuring and Asset Impairment Charges Restructuring and Asset Impairment Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Restructuring Reserve [Roll Forward]
Beginning balance	$ 668	$ 1,960
Severance charges	632	0
Total period charges	632	0
Payments through June 30	(156)	(555)
Ending balance	1,144	1,405
Asset Impairment Charges	1,564	0
Total restructuring and asset impairment charges for the period	$ 2,196	$ 0

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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