Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Valuation and Qualifying Accounts Disclosure [Line Items]
Sales and allowances period	30 days
Contract liability	$ 11,517	$ 23,156
Allowance for sales discounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Total Allowances	0	0
Allowance for chargebacks
Valuation and Qualifying Accounts Disclosure [Line Items]
Total Allowances	$ 5,810	7,727
Minimum
Valuation and Qualifying Accounts Disclosure [Line Items]
Payment terms	30 days
Maximum
Valuation and Qualifying Accounts Disclosure [Line Items]
Payment terms	60 days
Deferred Shipment Revenue
Valuation and Qualifying Accounts Disclosure [Line Items]
Contract liability	$ 0	0
Gift Cards
Valuation and Qualifying Accounts Disclosure [Line Items]
Contract liability	0	0
Loyalty Programs
Valuation and Qualifying Accounts Disclosure [Line Items]
Contract liability	$ 0	$ 0