Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details)

v3.19.3
Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($)
Jan. 01, 2019
Sep. 30, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Leases, right-of-use asset $ 406,900,000    
Right-of-use asset 18,948,000 $ 35,322,000 $ 18,900,000
Lease liabilities 419,500,000 338,697  
Lease liabilities 20,600,000 38,161  
Lease exit costs accrual   0 4,634,000
Intangible assets 65,700,000 64,300,000 69,705,000
Right-of-use asset 387,970,000 $ 328,850,000 0
ASU 2016-02      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Impairment loss 10,500,000    
Intangible assets $ (4,005,000)   $ (4,000,000.0)