Fair Value Measurements - Narrative (Details)	6 Months Ended
	Jun. 30, 2020 USD ($) loan	Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of performance distributions (percent)	37.25%
Common equity invested (percent)	2.50%
Payments for contingent consideration	$ 0
Number of mortgage loans (in loan) | loan	10
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Change in amount of contingent liability	$ 2,600,000
Fair value of earn-outs	$ 338,000	$ 2,919,000