Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Assets:
Contingent consideration — current	$ 279	$ 477
Contingent consideration — non-current	104	1,612
Recorded Value [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Corporate-owned life insurance — non-current	2,493	28,999
Contingent consideration — current	8
Contingent consideration — non-current	104
Active markets for identical assets or liabilities (Level 1) [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Corporate-owned life insurance — non-current	0	0
Quoted prices in similar instruments and observable inputs (Level 2) [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Corporate-owned life insurance — non-current	0	28,999
Active markets for unobservable inputs (Level 3) [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Corporate-owned life insurance — non-current	2,493
Contingent consideration — current	8
Contingent consideration — non-current	$ 104