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Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
Income Taxes (Details) - USD ($)	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ (212,000)	$ 370,000	$ (8,454,000)	$ (698,000)
Income tax expense (benefit) from discontinued operations	200,000	(400,000)	7,000,000.0	700,000
Income tax expense (benefit) from continuing and discontinued operations	$ 0	$ 3,000	$ (1,500,000)	$ 6,000

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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