Fair Value Measurements - Changes in Fair Value of Level 3 Assets and Liabilities on a Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Corporate-owned life insurance [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 3,673	$ 3,458
Realized gains	0	0
Unrealized gain relating to instruments held at reporting date	600	107
Purchases, sales, issuances and settlements, net	87	108
Balance at end of period	4,360	3,673
Contingent Consideration [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	0
Purchases, sales, issuances and settlements, net	1,739
Balance at end of period	$ 1,739