Schedule of Joint Venture Revenues and Net Income (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Schedule Of Equity Method Investments [Line Items]
Net income	$ 2,077	$ 2,106
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	2,039	11,092
Net income	394	5,057
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | Oak Grove Asset Acquisitions LP [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	1,098
Net income	219
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | CPFH LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	801	11,092
Net income	42	$ 5,057
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] | HGC Funding I LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Revenues	140
Net income	$ 133