Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lease and Contractual Commitments [Abstract]
Lease and contractual commitments	$ 466,800
Accrued amount of lease and contractual commitments	70,500
Contingent Consideration [Abstract]
Asset acquisition, contingent consideration liability	1,200	$ 0	$ 750
Asset Acquisition Contingent Consideration [Member]
Contingent Consideration [Abstract]
Asset acquisition, contingent consideration liability	$ 5,300	$ 5,000