Summary of Significant Accounting Policies - Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Summary of Significant Accounting Policies
Existence of option to extend	true
Right to use asset	$ 87,389
Lease Liability	$ 88,846
Minimum
Summary of Significant Accounting Policies
Lease terms	12 months
Maximum
Summary of Significant Accounting Policies
Lease terms	24 years
Adjustments | ASU 2016- 02
Summary of Significant Accounting Policies
Right to use asset		$ 82,200
Lease Liability		$ 82,200