Income Taxes (Schedule Of Reconciliation From The Federal Statutory Income Tax Provision To Effective Tax (Benefit) Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
United States federal tax statutory rate	$ (3,976)	$ (1,201)	$ (4,433)
State taxes, net of federal benefit	(51)	3	(36)
Valuation allowances against deferred tax assets	7,890	90	121
Research and development tax credits	(252)	(135)	(412)
Foreign provision different than U.S. tax rate	391	545	641
Stock option expense	28	(27)	82
Adjustment of prior year tax credits and refunds	(63)	69	50
Goodwill impairment		417	1,299
Uncertain tax positions	(8)	(19)	(138)
Other	(22)	78	(196)
Total income tax expense (benefit)	$ 3,937	$ (180)	$ (3,022)