Finance Receivables - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020
Accounts, Notes, Loans and Financing Receivable
Adjustments to retained earnings	$ 518,253		$ 518,253		$ 470,326
Accounting Standards Update [Extensible List]			us-gaap:AccountingStandardsUpdate201613Member		us-gaap:AccountingStandardsUpdate201613Member	us-gaap:AccountingStandardsUpdate201602Member
Allowance for credit losses			$ 4,900
Interest income from direct financing lease	600	$ 900	1,600	$ 1,900
Cumulative Effect, Period of Adoption, Adjustments
Accounts, Notes, Loans and Financing Receivable
Adjustments to retained earnings							$ (6,900)
Cipriani
Accounts, Notes, Loans and Financing Receivable
Notes receivable, principal amount	$ 28,000		$ 28,000
Accounts receivable, term			10 years
Stated interest rate (percent)	10.00%		10.00%
Notes receivable	$ 28,000		$ 28,000		$ 28,000
Interest income	700	$ 800	1,400	$ 2,700
Cipriani | Third Party
Accounts, Notes, Loans and Financing Receivable
Senior notes	$ 60,000		$ 60,000