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Fair Value of Financial Instruments
6 Months Ended
Jun. 30, 2013
Fair Value of Financial Instruments [Abstract]  
Fair Value of Financial Instrument Disclosures [Text Block]
FAIR VALUE OF FINANCIAL INSTRUMENTS

The estimated fair values of our financial instruments are as follows (in thousands) as of:
 
June 30, 2013
 
Dec. 31, 2012
 
June 30, 2012
 
Carrying
Amount
Fair Value
 
Carrying
Amount
Fair Value
 
Carrying
Amount
Fair Value
Cash and cash equivalents (a)
$
30,633

$
30,633

 
$
15,462

$
15,462

 
$
40,110

$
40,110

Restricted cash and equivalents (a)
$
7,279

$
7,279

 
$
7,916

$
7,916

 
$
4,772

$
4,772

Notes payable (a)
$
100,000

$
100,000

 
$
277,000

$
277,000

 
$
225,000

$
225,000

Long-term debt, including current maturities (b)
$
1,214,066

$
1,323,543

 
$
1,042,850

$
1,231,559

 
$
1,272,481

$
1,460,723

__________
(a)
Fair value approximates carrying value due to either the short-term length of maturity or variable interest rates that approximate prevailing market rates and therefore is classified in Level 1 in the fair value hierarchy.
(b)
Long-term debt is valued based on observable inputs available either directly or indirectly for similar liabilities in active markets and therefore is classified in Level 2 in the fair value hierarchy.