Leases - Other Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Operating cash flows from operating leases	$ 9,573	$ 9,003
Right-of-use assets obtained in exchange for new operating lease liabilities (1)	3,457	13,118
Series of Individually Immaterial Business Acquisitions
Lessee, Lease, Description [Line Items]
Right-of-use assets obtained in exchange for lease liabilities, business acquisitions	$ 12,418	$ 1,668