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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information
SUPPLEMENTAL CASH FLOW INFORMATION
Operating assets and liabilities
The following table summarizes the changes in the components of operating assets and liabilities (in thousands):
 
Year Ended December 31, 2013
 
Year Ended December 31, 2012
 
Year Ended December 31, 2011
Decrease (increase) in restricted cash
$
29,467

 
$
4,907

 
$
25,827

Decrease (increase) in accounts receivable
11,172

 
(129,102
)
 
28,568

Decrease (increase) in receivable from affiliates
(61,095
)
 
230

 
(6,071
)
Decrease (increase) in inventories
(11,352
)
 
(936
)
 
(8,908
)
Decrease (increase) in derivatives and margin deposits
1,012

 
(1,245
)
 
14,287

Decrease (increase) in other current assets
9,361

 
4,197

 
(7,214
)
Decrease (increase) in other assets
137

 
2,467

 
(1,874
)
Increase (decrease) in accounts payable and accrued liabilities
31,030

 
114,776

 
(9,446
)
Increase (decrease) in payable to affiliates
62,279

 
(6,871
)
 
6,614

Increase (decrease) in payables to pre-petition creditors
(29,609
)
 
(5,206
)
 
(34,490
)
Increase (decrease) in other noncurrent liabilities
(2,541
)
 
2,500

 
4,115

 
$
39,861

 
$
(14,283
)
 
$
11,408


Non-cash transactions
On November 1, 2011, we contributed certain assets and liabilities to NGL Energy in return for cash and ownership interests in NGL Energy and its general partner. The assets and liabilities we contributed are summarized in Note 7.
In 2013, we recorded a $180.2 million reduction to noncontrolling interests in consolidated subsidiaries and an offsetting increase to additional paid-in capital of $112.9 million (net of tax impact of $67.3 million). This non-cash entry represents the portion of the proceeds in excess of historical cost which were attributed to Rose Rock's third-party unitholders related to Rose Rock's purchase of a two-thirds interest in SCPL (Note 4).
During the year ended December 31, 2013, we issued 425,618 shares of Class A common stock related to the exercise of warrants resulting in the non-cash reclassification of $21.4 million from other noncurrent liabilities to common stock and additional paid-in capital. Cash proceeds of $0.2 million were received in connection with the warrant exercises.
Other supplemental disclosures
We paid cash for interest totaling $23.9 million, $8.0 million and $32.6 million for the years ended December 31, 2013, 2012 and 2011, respectively.
We paid cash for income taxes (net of refunds received) in the amount of $13.9 million, $11.4 million and $10.1 million during the years ended December 31, 2013, 2012 and 2011, respectively.
We accrued $10.1 million, $1.6 million and $4.0 million at December 31, 2013, 2012 and 2011, respectively, for purchases of property, plant and equipment.