Valuations and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 812		$ 1,294		$ 3,925
Allowance Additions or (Reductions)	79,057		75,116		72,168
Returns and Price Adjustments	(79,109)		(75,598)		(74,799)
Bad Debt Write-offs	0		0		0
Balance at End of Year	760		812		1,294
OEM and Stocking Representative Returns and Price Adjustments [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	712		1,066		995
Allowance Additions or (Reductions)	1,954		1,452		2,359
Returns and Price Adjustments	(1,929)		(1,806)		(2,288)
Bad Debt Write-offs	0		0		0
Balance at End of Year	737		712		1,066
Unclaimed Distributor Price Adjustments [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	51	[1]	169	[1]	2,885	[1]
Allowance Additions or (Reductions)	77,129		73,674	[1]	69,795	[1]
Returns and Price Adjustments	(77,180)		(73,792)	[1]	(72,511)	[1]
Bad Debt Write-offs	0		0	[1]	0	[1]
Balance at End of Year	0		51	[1]	169	[1]
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	49		59		45
Allowance Additions or (Reductions)	(26)		(10)		14
Returns and Price Adjustments	0		0		0
Bad Debt Write-offs	0		0		0
Balance at End of Year	$ 23		$ 49		$ 59

[1] The Company estimates and records an allowance for sell-through distributor price adjustments for which the specific resale transaction has been completed, but the price adjustment claim has not yet been received from the sell-through distributor. This allowance typically represents approximately one to three weeks of unclaimed price adjustments.