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Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Schedule of Error Corrections and Prior Period Adjustments
The impact of the immaterial error on our prior period Consolidated Statements of Cash Flows is presented in the following table:
 
2013
 
2012
Dollars in thousands
As Reported
 
Adjustment
 
As Revised
 
As Reported
 
Adjustment
 
As Revised
Cash flows from changes in operating assets and liabilities:
 
 
 
 
 
 
 
 
 
 
 
Accounts payable
$
(2,252
)
 
$
3,743

 
$
1,491

 
$
58,248

 
$
1,856

 
$
60,104

Net cash flows from operating activities
$
324,091

 
$
3,743

 
$
327,834

 
$
463,906

 
$
1,856

 
$
465,762

Investing Activities:
 
 
 
 
 
 
 
 
 
 
 
Purchases of property and equipment
$
(157,669
)
 
$
(3,743
)
 
$
(161,412
)
 
$
(208,054
)
 
$
(1,856
)
 
$
(209,910
)
Net cash flows from investing activities
$
(393,448
)
 
$
(3,743
)
 
$
(397,191
)
 
$
(346,650
)
 
$
(1,856
)
 
$
(348,506
)
Supplemental disclosure of non-cash investing and financing activities:
 
 
 
 
 
 
 
 
 
 
 
Purchases of property and equipment included in ending accounts payable
$
12,254

 
$
(5,598
)
 
$
6,656

 
$
27,562

 
$
(1,856
)
 
$
25,706