Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2019

Fair Value of Financial Instruments [Abstract]

Carrying Amounts of Financial Instruments

	As of June 30, 2019				As of December 31, 2018
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Cash and cash equivalents	$	180,166	$	180,166	$	219,408	$	219,408
Restricted cash		47,745		47,745		53,726		53,726
Notes receivable, net		440,854		575,000		439,167		537,000
Lines-of-credit, notes payable, and receivable-
backed notes payable		574,932		598,700		592,322		596,900
Junior subordinated debentures		71,691		90,500		71,323		87,000