Schedule of Deferred Tax Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Deferred Tax Assets And Liabilities Details
Allowance for doubtful accounts	$ 1	$ 4
Inventory reserves and uniform capitalization	661	415
Other accrued liabilities	178	217
Deferred tax assets, reserve and accruals	840	636
Valuation allowance-current deferred tax assets	(712)	(612)
Total current deferred tax assets	128	24
Depreciation on property, plant & equipment	142	288
Non-qualified stock option expense	3	9
Deferred compensation	246	208
Deferred income		7
Tax credits	114	156
Alternative minimum tax credit carry-forwards		106
Net operating loss carry-forwards	5,095	5,333
Other, net	45	49
Deferred tax assets, gross total	5,645	6,156
Valuation allowance-long-term deferred tax assets	(5,586)	(5,929)
Total long-term deferred tax assets	59	227
Intangible assets other than goodwill		(89)
Total deferred tax liabilities (long-term)		(89)
Net deferred tax assets (liabilities)	$ 187	$ 162