Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Examination [Line Items]
Income tax provision	$ 539,000	$ 44,000	$ 126,000	$ 87,000
Effective income tax rate (as a percent)			32.50%
Excess tax benefit from the exercise of stock options			$ 208,000
Need for valuation allowance based on history of cumulative losses			3 years