Annual report pursuant to Section 13 and 15(d)

Condensed Consolidating Financial Information - Condensed Consolidating Statements of Comprehensive Income (Loss) (Details)

v2.4.0.8
Condensed Consolidating Financial Information - Condensed Consolidating Statements of Comprehensive Income (Loss) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]                      
Net income $ 24,278 $ 40,527 $ 43,828 $ 44,559 $ 15,883 $ 502 $ 25,117 $ 26,869 $ 153,192 $ 68,371 $ 108,422
Foreign currency translation adjustment                 (12,223) 1,355 (1,865)
Change in fair value of derivative instruments, net of taxes                 (4,419) [1] (8,452) [1] 1,576 [1]
Reclassification of settled contracts, net of taxes                 10,290 [2] 1,005 [2] 4,720 [2]
Other comprehensive income (loss)                 (6,352) (6,092) 4,431
Comprehensive income                 146,840 62,279 112,853
Parent [Member]
                      
Condensed Financial Statements, Captions [Line Items]                      
Net income                 153,192 68,371 108,422
Foreign currency translation adjustment                 (12,223) 1,355 (1,865)
Change in fair value of derivative instruments, net of taxes                 (4,419) (8,452) 1,576
Reclassification of settled contracts, net of taxes                 10,290 1,005 4,720
Other comprehensive income (loss)                 (6,352) (6,092) 4,431
Comprehensive income                 146,840 62,279 112,853
Guarantor [Member]
                      
Condensed Financial Statements, Captions [Line Items]                      
Net income                 508 (3,066) 166
Foreign currency translation adjustment                 0 0 0
Change in fair value of derivative instruments, net of taxes                 0 0 0
Reclassification of settled contracts, net of taxes                 0 0 0
Other comprehensive income (loss)                 0 0 0
Comprehensive income                 508 (3,066) 166
Non-Guarantor [Member]
                      
Condensed Financial Statements, Captions [Line Items]                      
Net income                 (3,000) (1,586) (1,470)
Foreign currency translation adjustment                 (12,223) 1,355 (1,865)
Change in fair value of derivative instruments, net of taxes                 0 0 0
Reclassification of settled contracts, net of taxes                 0 0 0
Other comprehensive income (loss)                 (12,223) 1,355 (1,865)
Comprehensive income                 (15,223) (231) (3,335)
Eliminations [Member]
                      
Condensed Financial Statements, Captions [Line Items]                      
Net income                 2,492 4,652 1,304
Foreign currency translation adjustment                 12,223 (1,355) 1,865
Change in fair value of derivative instruments, net of taxes                 0 0 0
Reclassification of settled contracts, net of taxes                 0 0 0
Other comprehensive income (loss)                 12,223 (1,355) 1,865
Comprehensive income                 $ 14,715 $ 3,297 $ 3,169
[1] Net of $4.3 million and $(4.3) million in taxes for the years ended December 31, 2013 and 2012, respectively. No taxes were recorded in the year ended 2011.
[2] Net of $(0.5) million and $0.5 million in taxes for the years ended December 31, 2013 and 2012, respectively. No taxes were recorded in the year ended 2011.