Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax expense		$ 1,000	$ 800	$ 4,000
Percentage of income tax expense on pre-tax loss			(0.0109%)
Pre-tax loss	$ (2,854,000)	$ (3,987,000)	$ (8,690,000)	$ (5,665,000)
Federal statutory rate (as a percent)			35.00%