Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Interest on lease liabilities	$ 26	$ 26	$ 52	$ 52
Operating lease cost	2,304	977	4,452	1,804
Total lease expense	4,226	1,423	7,760	2,602
Operating cash flow used for operating leases			2,402	1,147
Financing cash flow used for finance leases			63	15
Capital Leased Assets, Gross	4,391		4,391		$ 4,350
Right of use asset obtained in exchange for new operating lease liabilities			88,244		48,419
Amortization of above and below Market Leases	$ 27,238		$ 27,238		27,614
Weighted - average remaining lease term - finance leases (in years)	2 years 11 months 19 days		2 years 11 months 19 days
Weighted - average remaining lease term - operating leases (in years)	26 years 6 months		26 years 6 months
Weighted - average discount rate - finance leases (annual)	2.44%		2.44%
Weighted - average discount rate - operating leases (annual)	3.84%		3.84%
Present Value of Lease Liabilities	$ 4,326		$ 4,326
Capital Lease Obligations	4,326		4,326		4,334
Present Value of Lease Liabilities	77,741		77,741		$ 49,964
Operating And Finance Lease, Payments			2,465	1,162
Below Market Leases
Lessee, Lease, Description [Line Items]
Variable lease expense	1,819	420	3,118	746
Short-term Lease, Cost	$ 77	$ 0	$ 138	$ 0