Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Federal	$ 152	$ 16	$ 152	$ 16
State	27	9	27	9
Tax expense	$ 179	$ 25	$ 179	$ 25