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Debt and Other Borrowings - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Oct. 15, 2019
Apr. 15, 2019
Sep. 30, 2019
Sep. 30, 2019
Dec. 31, 2018
Senior Notes | 5.5% Senior Notes due in 2026          
Debt Instrument [Line Items]          
Stated interest rate     5.50% 5.50%  
Aggregate principal amount     $ 350,000,000.0 $ 350,000,000.0  
Interest payment   $ 9,600,000      
Unamortized debt issuance cost     4,000,000 4,000,000 $ 4,400,000
Line of credit | Revolving credit facility          
Debt Instrument [Line Items]          
Outstanding borrowings     0 0 0
Available credit     344,500,000 344,500,000 345,000,000.0
Interest payments     0 0  
Unamortized debt issuance cost     3,300,000 $ 3,300,000 4,100,000
Line of credit | Revolving credit facility | Base Rate | Minimum          
Debt Instrument [Line Items]          
Basis spread on variable rate       0.50%  
Line of credit | Revolving credit facility | Base Rate | Maximum          
Debt Instrument [Line Items]          
Basis spread on variable rate       1.00%  
Line of credit | Revolving credit facility | LIBOR | Minimum          
Debt Instrument [Line Items]          
Basis spread on variable rate       1.50%  
Line of credit | Revolving credit facility | LIBOR | Maximum          
Debt Instrument [Line Items]          
Basis spread on variable rate       2.00%  
Line of credit | Letter of credit          
Debt Instrument [Line Items]          
Outstanding borrowings     $ 5,500,000 $ 5,500,000 $ 5,000,000.0
Subsequent event | Senior Notes | 5.5% Senior Notes due in 2026          
Debt Instrument [Line Items]          
Interest payment $ 9,600,000