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Debt (Tables)
 9 Months Ended
Sep. 30, 2013
Debt Disclosure [Abstract]  
Schedule of Debt [Table Text Block]
Debt consists of:
 
 
 
September 30,
 
December 31,
 
 
 
2013
 
2012
 
 
 
 
 
 
 
 
 
Revolving credit agreement
 
$
—
 
$
—
 
6.75% Senior Notes due 2020
 
 
550,000
 
 
—
 
11% Senior Notes due 2016
 
 
—
 
 
425,000
 
Original issue premium
 
 
—
 
 
4,193
 
Notes payable and other bank loans
 
 
443
 
 
1,385
 
 
 
 
550,443
 
 
430,578
 
Obligations under capital leases
 
 
830
 
 
1,125
 
 
 
 
551,273
 
 
431,703
 
 
 
 
 
 
 
 
 
Less current portion:
 
 
784
 
 
1,858
 
 
 
$
550,489
 
$
429,845