Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Examination [Line Items]
Income tax expense (benefit)	$ 590,000	$ (96,000)	$ 901,000	$ 53,000
Effective income tax rate (as a percent)			17.00%	2.00%
Excess tax benefits from employee stock option exercises		$ 340,000		$ 356,000
Need for valuation allowance based on history of cumulative losses			3 years