Fair Value Measurements (Details) (Recurring basis, USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Mar. 31, 2014
Fair Value
Assets (Liabilities) at fair value
Nonqualified deferred compensation assets	$ 5,058	$ 4,534
Nonqualified deferred compensation liability	(5,058)	(4,534)
Designated derivatives assets	13
Designated derivatives liability	(1,703)	(832)
Non-designated derivatives liability	(81)
Contingent consideration for acquisition of business	(30,000)	(30,000)
Level 1
Assets (Liabilities) at fair value
Nonqualified deferred compensation assets	5,058	4,534
Nonqualified deferred compensation liability	(5,058)	(4,534)
Designated derivatives assets	0
Designated derivatives liability	0
Non-designated derivatives liability	0
Contingent consideration for acquisition of business	0
Level 2
Assets (Liabilities) at fair value
Nonqualified deferred compensation assets	0
Nonqualified deferred compensation liability	0
Designated derivatives assets	13
Designated derivatives liability	(1,703)	(832)
Non-designated derivatives liability	(81)
Contingent consideration for acquisition of business	0
Level 3
Assets (Liabilities) at fair value
Nonqualified deferred compensation assets	0
Nonqualified deferred compensation liability	0
Designated derivatives assets	0
Designated derivatives liability	0
Non-designated derivatives liability	0
Contingent consideration for acquisition of business	$ (30,000)	$ (30,000)