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DISCONTINUED OPERATIONS (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2014
Feb. 28, 2014
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2013
Jul. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Gain from sale of discontinued operations, net of tax     $ 0 $ 0 $ 0 $ (784)    
Amount released from escrow   $ 3,200            
York [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Amount released from escrow   800            
North America Telecom [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Consideration               $ 129,000
Gain from sale of discontinued operations, net of tax             $ 13,800  
Purchase price placed in escrow             15,250  
Escrow received             126,000  
Additional amount held in escrow             3,000  
Purchase consideration placed in escrow $ 6,450              
Period of escrow to be released after closing date 14 months              
Adjustment to prior period gain on disposal             (800)  
Net gain from sale of discontinued operations, net of adjustment to prior period gain             $ 13,000  
North America Telecom [Member] | Working Capital Adjustment [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Purchase consideration placed in escrow   $ 4,000            
North America Telecom [Member] | Income Tax Related Liabilities [Member]                
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                
Purchase consideration placed in escrow     4,800   $ 4,800      
Period of escrow to be released after closing date         30 days      
Reserve for escrow deposit     $ 400   $ 400