Supplemental Condensed Consolidating Financial Information (Narrative) (Details) |
Dec. 31, 2015 |
Dec. 31, 2014 |
May. 13, 2011 |
|---|---|---|---|
| Condensed Financial Statements, Captions [Line Items] | |||
| Percentage ownership in subsidiaries | 100.00% | ||
| 7.75% Senior Notes | |||
| Condensed Financial Statements, Captions [Line Items] | |||
| Interest rate percentage on borrowings, per annum | 7.75% | 7.75% | 7.75% |