XML 15 R38.htm IDEA: XBRL DOCUMENT v3.19.3
Senior Notes (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
May 02, 2013
Nov. 02, 2010
Senior Notes [Line Items]          
Senior note redemption price, percent 100.00%        
Senior notes, net $ 0   $ 540,042    
Write-off of debt financing fees 2,168 $ 0      
Senior Notes Due 2020 [Member]          
Senior Notes [Line Items]          
Initial borrowing in senior notes         $ 300,000
Senior Notes Due 2021 [Member]          
Senior Notes [Line Items]          
Initial borrowing in senior notes       $ 250,000  
Write-off of debt financing fees $ 2,000