Acquisitions Acquisitions (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013 TimeManagement Corporation [Member]	Jun. 10, 2013 TimeManagement Corporation [Member]
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Current Assets				$ 327
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment				88
Business Acquisition, Purchase Price Allocation, Goodwill Amount	17,701	14,128		3,444
Business Acquisition, Purchase Price Allocation, Intangible Assets Other than Goodwill				605
Business Acquisition, Purchase Price Allocation, Assets Acquired				4,464
Business Acquisition, Purchase Price Allocation, Liabilities Assumed				914
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net				$ 3,550
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			5 years