Leases - Operating Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Right-of-use assets - operating	$ 52,410	$ 32,539
Right-of-use assets - finance	$ 1,616	0
Right-of-use asset - finance [Extensible List]	us-gaap:OtherAssets
Lease liabilities - operating	$ 56,705	35,525
Lease liabilities - finance	$ 1,619	$ 0
Lease liabilities - finance [Extensible List]	us-gaap:DebtLongtermAndShorttermCombinedAmount
Weighted average remaining lease term (in years) - operating	12 years 4 months 24 days	14 years 1 month 6 days
Weighted average remaining lease term (in years) - finance	14 years 7 months 6 days	0 years
Weighted average discount rate - operating	2.66%	3.44%
Weighted average discount rate - finance	1.76%