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Acquisitions Purchase Price Allocation (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Dec. 17, 2014
Oct. 01, 2014
FTT Assets [Member]      
Business Acquisition [Line Items]      
Property, plant and equipment [1]   $ 11,145  
Intangible assets [1]   0  
Inventory [1]   0  
Accounts receivable [1]   1,901  
Accounts payable [1]   (1,121)  
Total [1]   $ 11,925  
Additional consideration $ 400    
Greenville-Mt. Pleasant Assets [Member]      
Business Acquisition [Line Items]      
Property, plant and equipment [2]     $ 4,829
Intangible assets [2]     5,171
Inventory [2]     1,125
Accounts receivable [2]     0
Accounts payable [2]     0
Total [2]     $ 11,125
[1] During the six months ended June 30, 2015, we adjusted our previously disclosed purchase price allocation and certain of the acquisition date fair values in connection with working capital adjustments and an additional $0.4 million of consideration paid for additional assets. The property, plant and equipment, accounts receivable and accounts payable valuation are subject to change during the purchase price allocation period.
[2] During the six months ended June 30, 2015, we adjusted our purchase price allocation and certain of the acquisition date fair values previously disclosed. The property, plant and equipment, intangible assets and inventory valuation are subject to change during the purchase price allocation period.