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SALE OF COALOGIX (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Working capital escrow deposit   $ 347  
Proceeds to buyers from the sale of 100% of CoaLogix     101,000
Sale of Stock, Percentage of Ownership before Transaction     65.00%
Proceeds from the sale of CoaLogix     61,915
Escrow deposit for indemnification claims     5,961
Release of escrow deposits 0 5,961 347
Total gain on sale of CoaLogix before taxes     46,974
Working capital adjustment     485
Tax expense on sale of CoaLogix     15,971
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 34.00% 34.00% 34.00%
Net gain after tax on sale of CoaLogix     31,003
Tax benefit recorded with respect to gain on sale of CoaLogix     $ 14,571