ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Incentive Award Plan [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	$ 2,114	$ 5,345
Net income attributable to noncontrolling interests	0	0
Distribution	(1,370)	(3,219)
Change in fair value	300	(12)
Balance, end of period	1,044	2,114
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	(300)
Employment Agreement Award [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	13,688	11,374
Net income attributable to noncontrolling interests	0	0
Distribution	0	0
Change in fair value	4,305	2,314
Balance, end of period	17,993	13,688
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	(4,305)
Redeemable Noncontrolling Interests [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	11,999	12,853
Net income attributable to noncontrolling interests	639	665
Distribution	0	0
Change in fair value	(1,802)	(1,519)
Balance, end of period	10,836	11,999
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