Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Federal	$ (10)	$ 212	$ 142	$ 228
State	(2)	62	25	71
Tax expense (benefit)	$ (12)	$ 274	$ 167	$ 299