Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax credit at statutory rates	$ (436)	$ (405)
Nondeductible expenses	2	3
State income tax, net of federal benefits	(66)	(61)
Other	144	(3)
Increase in valuation allowance	$ 356	$ 466