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SALES OF BRANCH, SUBSIDIARY AND BUSINESS UNITS - The Palisades Group Sale Additional Information (Details) - USD ($)
12 Months Ended
May 05, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Stated interest rate 10.00%      
Note receivable $ 5,000,000      
Gain on sale of The Palisades Group   $ 0 $ 0 $ 163,000
Disposal Group, Disposed of by Sale, Not Discontinued Operations | The Palisades Group        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Gain on sale of The Palisades Group 3,700,000   3,694,000  
The Note $ 2,400,000   2,370,000  
Gain on repayment of notes receivable     $ 2,800,000