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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 3) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Incentive Award Plan [Member]
    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance $ 2,114 $ 5,345
Net income attributable to noncontrolling interests 0 0
Change in fair value 106 0
Balance 2,220 5,345
The amount of total losses for the period included in earnings attributable to the change in unrealized losses relating to assets and liabilities still held at the reporting date (106) 0
Employment Agreement Award [Member]
    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance 13,688 11,374
Net income attributable to noncontrolling interests 0 0
Change in fair value 953 462
Balance 14,641 11,836
The amount of total losses for the period included in earnings attributable to the change in unrealized losses relating to assets and liabilities still held at the reporting date (953) (462)
Redeemable Noncontrolling Interests [Member]
    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Balance 11,999 12,853
Net income attributable to noncontrolling interests 10 (187)
Change in fair value (554) 346
Balance 11,455 13,012
The amount of total losses for the period included in earnings attributable to the change in unrealized losses relating to assets and liabilities still held at the reporting date $ 0 $ 0