Income Taxes - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) entity	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) entity	Sep. 30, 2020 USD ($)
Income Tax Examination [Line Items]
Number of taxable subsidiaries | entity	2		2
Taxable income	$ 9,900,000	$ 2,500,000	$ 26,300,000	$ 1,700,000
Provision for income taxes (benefit)	102,000	(16,000)	203,000	(215,000)
Income tax interest and penalties recorded	0	0	0	0
Assets
Income Tax Examination [Line Items]
Deferred income tax assets	0	0	0	0
Liability
Income Tax Examination [Line Items]
Deferred income tax liabilities	$ 0	$ 0	$ 0	$ 0