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Income Taxes - Additional Information (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	Oct. 31, 2016	Sep. 30, 2015	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Taxes [Line Items]
Income Tax Expense (Benefit)			$ 169,000	$ 100,000	$ 574,000	$ 72,000
Income Tax Examination, Increase (Decrease) in Liability from Prior Year			100,000		100,000
Income Tax Examination, Penalties and Interest Accrued			100,000		100,000
Unrecognized Tax Benefits			$ 3,024,000		$ 3,024,000		$ 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%

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