NON-CONTROLLING INTEREST: (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Non-controlling interest activity
Balance at the beginning of the period			$ 23,960,000	$ 21,000,000
Net earnings	1,344,000	1,395,000	4,353,000	5,316,000
Dividend paid	(231,000)	(533,000)	(1,097,000)	(2,253,000)
Other			(200,000)	(100,000)
Balance at the end of the period	$ 27,129,000	$ 23,900,000	$ 27,129,000	$ 23,900,000