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

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Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Income Taxes - Additional Information (Details) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
	Oct. 31, 2016	Sep. 30, 2015	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Income Taxes [Line Items]
Income Tax Expense (Benefit)			$ (70,000)	$ 421,000	$ 504,000	$ 493,000
Unrecognized Tax Benefits			$ 3,046,000		$ 3,046,000		$ 2,957,000
Subsidiary Revenue		$ 66,000,000
Reversal of Service Tax Refund	$ 160,000
Service Tax Credit Receivable	$ 1,000,000
Maximum [Member]
Income Taxes [Line Items]
Percentage for Subsidiary Service Tax		15.00%
Minimum [Member]
Income Taxes [Line Items]
Percentage for Subsidiary Service Tax		12.36%