Commitments and Contingencies (Narrative) (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2016 USD ($) claim	Sep. 30, 2012 USD ($)
Commitments and Contingencies
Maximum indemnity period of claims for intellectual property	5 years
Indemnification
Commitments and Contingencies
Number of pending claims | claim	0
Future capital expenditures
Commitments and Contingencies
Material commitments	$ 5,000
Sanuk
Commitments and Contingencies
Contingent consideration for acquisition of business	19,700
Contingent consideration arrangement | Hoka
Commitments and Contingencies
Contingent consideration maximum		$ 2,000
Contingent consideration amount paid	1,700
Accounts payable and accrued liabilities | Contingent consideration arrangement | Hoka
Commitments and Contingencies
Contingent liability, current	$ 300