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Supplemental Information
 12 Months Ended
Dec. 31, 2012
Other Income [Abstract]  
Other Income, Net
Supplemental Information
Accrued Liabilities
Accrued liabilities were $181,460 and $137,561 at December 31, 2012 and 2011, respectively. Accrued rebates, which are a component of accrued liabilities, were $28,312 and $23,758 at December 31, 2012 and 2011, respectively. No other component of accrued liabilities was more than five percent of total current liabilities.
Other Income, Net
 
 
Year Ended December 31,
 
 
2012
 
2011
 
2010
Management services
 
$
400

 
$
400

 
$
850

Interest income
 
4,010

 
2,865

 
1,510

Franchise taxes
 
(664
)
 
(893
)
 
(754
)
Equity in income of joint ventures
 
1,444

 
2,890

 
2,212

Other
 
(1,670
)
 
366

 
653

Other income, net
 
$
3,520

 
$
5,628

 
$
4,471


Cash Flow Information
 
 
Year Ended December 31,
 
 
2012
 
2011
 
2010
Cash paid for:
 
 
 
 
 
 
Interest paid, net of interest capitalized
 
$
42,266

 
$
48,431

 
$
33,980

Income taxes paid
 
179,882

 
126,283

 
108,218

Non-cash financing activity:
 
 
 
 
 
 
Proceeds from borrowings related to the Authority's 6 ½% tax-
   exempt revenue bonds due August 1, 2029 (in restricted cash)
 
$
—

 
$
—

 
$
93,943

Proceeds from borrowings related to the Authority's GO Zone
   6 ½% tax-exempt revenue bonds due November 1, 2035
   (in restricted cash)
 
—

 
—

 
87,940

Proceeds from borrowings related to the Authority's IKE Zone
   6 ½% tax-exempt revenue bonds due November 1, 2035
   (in restricted cash)
 
—

 
—

 
64,209