Income Taxes - Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Taxes - Continuing Operations
Income tax expense (benefit)	$ 2,515	$ (355)	$ 3,695	$ (4,933)
Loss before income taxes
Income (loss) before income taxes	$ 1,859	$ (1,440)	$ 1,494	$ (12,497)
Effective income tax rate (as a percent)			247.30%	39.50%
Tax expense recorded related to valuation allowance			$ 2,600
Effective tax rate for tax expense recorded related to valuation allowance (as a percent)			174.10%

Represents the effective tax rate of valuation allowance of deferred tax asset changes in amount.

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

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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

+ References

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

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