Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 3,052	$ 2,719	$ 8,926	$ 4,126
Valuation allowance	2,200		2,200
Alternative minimum tax credit refund	800		800
Unrecognized tax benefits	$ 400		$ 400