XML 103 R93.htm IDEA: XBRL DOCUMENT v3.7.0.1
Subsidiary Guarantors (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
May 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]      
Senior notes   $ 272,998 $ 271,998
7.375% Senior Notes Due In 2019 [Member]      
Condensed Financial Statements, Captions [Line Items]      
Senior notes   $ 275,000  
Debt instrument, interest rate, stated percentage   7.375%  
Maturity date   Feb. 01, 2019  
Owned Domestic Subsidiaries Percent   100.00%  
8% Senior Notes [Member] | Subsequent Event [Member]      
Condensed Financial Statements, Captions [Line Items]      
Senior notes $ 325,000    
Debt instrument, interest rate, stated percentage 8.00%    
Owned Domestic Subsidiaries Percent 100.00%