Domestic And Foreign Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Domestic And Foreign Income Taxes [Abstract]
Net operating loss carry forwards and credits	$ 12,043	$ 7,931
Inventory	650	563
Compensation accruals	1,447	1,273
Accruals and reserves	89	113
Credits	251	236
Other	459	212
Total Deferred tax assets	14,939	10,328
Less: valuation allowance	(13,253)	(9,810)
Deferred tax assets net of valuation allowance	1,686	518
Deferred tax liabilities depreciation and amortization	(1,424)	(156)
Undistributed Earnings of Foreign Subsidiary	(194)	(319)
Total deferred tax liabilities	(1,618)	(475)
Net deferred tax	$ 68	$ 43