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Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Provision (benefit) for income taxes	$ 2,873,000	$ (9,061,000)	$ 3,428,000	$ (10,413,000)
Effective income tax rate (percent)	14.00%	54.20%	7.80%	(327.10%)
Valuation allowance	$ 300,000		$ 300,000		$ 300,000	$ 0
Accrued interest and penalties related to unrecognized tax benefits	$ 100,000		100,000			$ 100,000
Research Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits			$ (200,000)	$ (200,000.0)

X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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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 increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns.

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