15. Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred income tax assets:
Total deferred income tax assets	$ 482	$ 381
Current [Member]
Deferred income tax assets:
Accrued expenses	168	302
Deferred revenue	326	230
Net operating loss carry-forwards	0	0
Foreign tax credits	0	0
Stock-based compensation	0	0
Property and equipment	0	0
Other	0	0
Subtotal	494	532
Valuation allowance	(485)	(511)
Total deferred income tax assets	9	21
Deferred income tax liabilities:
Property and equipment	0	0
Prepaid expenses and other	(491)	(402)
Total deferred income tax liabilities	(491)	(402)
Net deferred income tax assets (liabilities)	(482)	(381)
NonCurrent [Member]
Deferred income tax assets:
Accrued expenses	0	0
Deferred revenue	0	0
Net operating loss carry-forwards	8,024	7,132
Foreign tax credits	892	892
Stock-based compensation	3,277	2,895
Property and equipment	58	118
Other	833	708
Subtotal	13,084	11,745
Valuation allowance	(12,602)	(11,364)
Total deferred income tax assets	482	381
Deferred income tax liabilities:
Property and equipment	0	0
Prepaid expenses and other	0	0
Total deferred income tax liabilities	0	0
Net deferred income tax assets (liabilities)	$ 482	$ 381