Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Income tax expense	$ 7,607	$ 11,755	$ 25,584
Effective tax rate	55.00%	70.30%	96.30%
Effective Income Tax Rate	21.00%		35.00%
Unrecognized tax benefits	$ 0	$ 0
Interest or penalty related to uncertain taxes, recognized	$ 0	$ 0
Minimum
Income Tax Contingency [Line Items]
Term of income tax examination	2 years
Maximum
Income Tax Contingency [Line Items]
Term of income tax examination	5 years