Income Taxes - Effective Income Tax (Benefit) Expense Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax expense	$ 150	$ 377
Effective income tax rate	13.90%	12.20%
Federal statutory tax rate	21.00%