XML 39 R27.htm IDEA: XBRL DOCUMENT v3.20.2
Long-Term Debt - Summary (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Aug. 26, 2020
Dec. 31, 2019
Sep. 30, 2019
May 30, 2017
Debt Instrument [Line Items]          
Total long-term debt $ 532,775   $ 631,568 $ 636,394  
Deferred finance costs, net 7,200 $ 7,300 3,400 3,600  
Revolving Unsecured Credit Facility due 2024 | Line of Credit          
Debt Instrument [Line Items]          
Total long-term debt 40,000   335,000 340,000  
5.375% senior unsecured notes due 2024 | Senior Notes          
Debt Instrument [Line Items]          
Total long-term debt $ 0   296,568 296,394  
Stated interest rate (as a percent) 5.375%       5.375%
4.625% Senior Unsecured Notes due 2028 [Member] | Senior Notes          
Debt Instrument [Line Items]          
Total long-term debt $ 492,775   $ 0 $ 0  
Stated interest rate (as a percent) 4.625% 4.625%