EMPLOYEE BENEFIT PLANS (Details 7) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of level 3 assets held
Net Realized and Unrealized Gains/(Losses)	$ 3,541	$ 10,328
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Reconciliation of level 3 assets held
Balance at the beginning of period	21,448	12,831
Net Realized and Unrealized Gains/(Losses)	2,005	1,461
Net Purchases, Issuances and Settlements	$ (4,021)	$ 7,156
Net Transfers in to/(Out of) Level 3
Balance at the end of the period	$ 19,432	$ 21,448
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] | UBS Trumbull Property Income [Member]
Reconciliation of level 3 assets held
Balance at the beginning of period	12,991	12,831
Net Realized and Unrealized Gains/(Losses)	799	1,360
Net Purchases, Issuances and Settlements	$ (5,000)	$ (1,200)
Net Transfers in to/(Out of) Level 3
Balance at the end of the period	$ 8,790	$ 12,991
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] | Garrison Real Estate Fund [Member]
Reconciliation of level 3 assets held
Balance at the beginning of period	4,076
Net Realized and Unrealized Gains/(Losses)	859
Net Purchases, Issuances and Settlements	$ (1,160)	$ 4,076
Net Transfers in to/(Out of) Level 3
Balance at the end of the period	$ 3,775	$ 4,076
Real Estate [Member] | Fair Value, Inputs, Level 3 [Member] | Marathon European Credit Opp Fund [Member]
Reconciliation of level 3 assets held
Balance at the beginning of period	4,381
Net Realized and Unrealized Gains/(Losses)	347	$ 101
Net Purchases, Issuances and Settlements	$ 2,139	$ 4,280
Net Transfers in to/(Out of) Level 3
Balance at the end of the period	$ 6,867	$ 4,381