Income Taxes (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Examination [Line Items]
Income tax expense (benefit)	$ (234,000)	$ 297,000	$ 92,000	$ 444,000
Effective income tax rate (as a percent)	40.00%	22.00%	13.00%	21.00%
Excess tax benefit from the exercise of stock options			$ 11,000	$ 70,000
Need for valuation allowance based on history of cumulative losses			3 years

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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 tax benefit from exercise of option under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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