Schedule of Joint Venture Revenues and Net Income (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Net income	$ 3,341	$ 3,322
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	2,707	11,106
Net income	800	5,068
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Oak Grove Asset Acquisitions LP [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	1,129
Net income	249
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | CPFH LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	1,254	11,106
Net income	243	$ 5,068
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | HGC Funding I LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	324
Net income	$ 308