Income Tax Expense (Components of Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Deferred:
Deferred tax assets:	$ 54,389	$ 53,366
Net operating loss carryforwards	711	474
Accrued expenses	8,400	8,953
Tax credits	183	61
Inventory	578	327
Capitalized research and development	0	31
Deferred tax assets	0	150
Depreciation and amortization	0	758
Deferred compensation	2,364	1,343
Valuation allowance	66,625	65,463
Total deferred tax assets	(50,866)	(50,144)
Deferred Tax Assets, Net of Valuation Allowance	15,759	15,319
Deferred Tax Liabilities, Net [Abstract]
Depreciation and amortization	(101)	0
Other	(89)	0
Total deferred tax liabilities	16,794	16,348
Net deferred tax liability	(1,035)	(1,029)
Trademarks and trade names
Deferred Tax Liabilities, Net [Abstract]
Deferred Tax Liabilities, Intangible Assets	(1,029)	(1,029)
Developed Technology and Trademark [Member]
Deferred Tax Liabilities, Net [Abstract]
Deferred Tax Liabilities, Intangible Assets	$ (15,575)	$ (15,319)