Summary of Significant Accounting Policies - Recently Adopted Accounting Standards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net	$ 57,141
Operating lease liabilities	64,416
ASC 842
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets, net		$ 62,922
Operating lease liabilities		70,657
ASC 842 | As Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred rent payable		5,922
ASC 842 | New Lease Standard Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment to retained earnings	$ 1,800
Operating lease right-of-use assets, net		62,922
Operating lease liabilities		70,657
Deferred rent payable		$ (5,922)