Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		$ 191	$ 120	$ 247
Charged to Costs and Expenses		133	135	12
Deductions	[1]	(6)	(64)	(139)
Balance at End of Period		318	191	120
Allowance for Ship and Debit Credits [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		27,425	28,696	23,040
Charged to Costs and Expenses		195,669	177,260	172,621
Deductions	[2]	(188,679)	(178,531)	(166,965)
Balance at End of Period		$ 34,415	$ 27,425	$ 28,696

[1] (1) Deductions relate to amounts written off against the allowances for doubtful accounts.

[2] Deductions relate to ship and debit credits issued which adjust the sell-in price from the standard distribution price to the pre-approved lower price. Refer to Note 2, Summary of Significant Accounting Policies, for the Company’s revenue recognition policy, including the Company’s accounting for ship and debit claims.