Income Taxes - Expense (benefit) reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income Taxes
Statutory federal income tax rate (as a percent)	21.00%	21.00%
Tax at the federal statutory rate	$ (426)	$ 555
State income taxes (net of federal benefit)	(71)	116
Other	2	(10)
Total income tax (benefit) expense	$ (495)	$ 661

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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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

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