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Correction of Statement of Cash Flows (Tables)
6 Months Ended
Jun. 30, 2012
Correction of Statement of Cash Flows [Abstract]  
Schedule of Error Corrections and Prior Period Adjustments
As a result, the affected line items under cash flows from operating activities and cash flows from investing activities of the consolidated statement of cash flows for the six months ended June 30, 2011, have been restated as follows (in thousands):

 
As Previously Reported
 
As Corrected
Changes in operating assets and liabilities, net of effects from acquisitions:
 
 
 
    Trade payables
$
(4,726
)
 
$
(2,817
)
Total adjustments
96

 
2,005

Net cash provided by operating activities
13,607

 
15,516

 
 
 
 
Capital expenditures for property and equipment
(21,642
)
 
(23,551
)
Net cash used in investing activities
(24,493
)
 
(26,402
)