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Acquisitions (Tables)
9 Months Ended
Sep. 30, 2012
Acquisitions [Abstract]  
Schedule of Business Acquisitions
(Dollars in thousands)
 
2012
 
Property and equipment
 $23,077 
Accounts receivable
  310 
Identifiable intangible assets:
    
 
Customer relationships and contracts
  3,200 
 
Trade name
  100 
Goodwill
  1,725 
Other assets
  273 
Liabilities
  (505)
Total cash consideration
 $28,180 

Business Acquisition, Pro Forma Information [Text Block]
(unaudited)
        Diluted Earnings 
(Dollars in thousands)
 
Revenue
  
Net Income
  
 Per Share
 
Actual from March 1, 2012 to September 30, 2012
 $7,441  $500  $0.04 
Supplemental pro forma for the nine months ended September 30, 2012
 $138,731  $5,860  $0.43 
Supplemental pro forma for the nine months ended September 30, 2011
 $132,876  $7,074  $0.53