Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Taxes
Income tax expense	$ 320	$ (3,769)	$ 3,440	$ 5,689
Actual effective tax rate	(1.10%)	2.80%	(4.00%)	(2.90%)
Statutory tax rate			21.00%	21.00%
Increase (decrease) in valuation allowance			$ 25,800

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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-Publisher FASB
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Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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