Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Trade accounts receivable, allowance	$ 151	$ 90
Inventory allowance	774	483	[1]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	3,299	3,126
Finite-Lived Intangible Assets, Accumulated Amortization	$ 9,438	$ 8,999
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	325,000,000	325,000,000
Common stock, shares issued	20,916,848	20,806,219
Common stock, shares outstanding	20,916,848	20,806,219

[1] At December 31, 2015, CUI-Canada inventory reserves of $97 thousand were reclassified from raw materials to inventory reserves and $246 thousand of prepaid expenses at CUI Inc. were reclassified to raw materials inventory.