Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Taxes
Income Tax Expense	$ 485	$ 260	$ 1,494	$ 520
Tax expense relating to true up cost			$ 500