Income Taxes (Componentes of Deferred Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Allowance for doubtful accounts	$ 415	$ 275
Inventory reserve	1,954	1,933
Accrued liabilities	2,694	3,094
Other, current	5,791	6,052
Gross current deferred income tax assets	10,854	11,354
Valuation allowance	(9,635)	(10,209)
Net current deferred income tax assets	1,219	1,145
Net operating losses	88,086	89,742
Tax credits	0	758
Depreciation and amortization	439	433
Investments	0	0
Capital loss carry forwards	38,951	40,739
Gross long-term deferred income tax assets	127,476	131,672
Valuation allowance	(123,782)	(127,961)
Net long-term deferred income tax asset	3,694	3,711
Total	$ 4,913	$ 4,856