Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Amortizable assets	$ 1,146	$ 887
Inventory	608	493
Accruals and reserves	174	499
Stock options	217	167
Net operating loss carry-forward	2,387	3,112
Credit carry-forward	581	731
Total Deferred Tax Asset	5,113	5,889
Deferred tax liabilities:
Prepaids	(71)	(190)
Other	(521)	(397)
Depreciable assets	(270)	195
Gross deferred tax assets	(862)	(392)
Net deferred tax asset	4,250	5,497
Less valuation allowance	(1,718)	(1,556)
Net deferred tax liabilities	$ 2,532	$ 3,941