Leases - Information Related to Company's Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating leases	$ 48,453	$ 49,537
Finance leases	1,560	1,588
Total right-of-use assets	50,013	51,125
Operating leases	54,232	55,187
Finance leases	1,576	1,598
Total lease liabilities	$ 55,808	$ 56,785
Weighted average remaining lease term (in years) - operating	12 years 1 month 6 days	12 years 2 months 12 days
Weighted average remaining lease term (in years) - finance	14 years 1 month 6 days	14 years 4 months 24 days
Weighted average discount rate - operating	2.66%	2.65%
Weighted average discount rate - finance	1.76%	1.76%
Right-of-use asset - finance [Extensible List]	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Lease liabilities - finance [Extensible List]	Borrowings	Borrowings