Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v2.4.0.6
Summary of Significant Accounting Policies (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Accounting Policies [Abstract]          
Total debt $ 2,434,753   $ 2,434,753   $ 3,013,974
Fair value approximated 2,973,312   2,973,312   3,506,546
Accumulated other comprehensive income, net of tax 33   33   71
Foreign currency translation adjustment, net of tax 0 110 (38) 187  
Foreign currency translation adjustment, tax     $ 37