Leases - Direct Financing Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Interest income on lease receivable	$ 15,805	$ 9,032
Interest income on deferred fees and costs	433	427
Total direct financing lease income	16,238	9,459
Leasing receivables
Lease receivables	281,601	217,076
Unearned income	(36,669)	(28,446)
Deferred fees and costs	3,953	1,962
Net investment in direct financing leases	$ 248,885	$ 190,592