NON-CONTROLLING INTEREST: (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Non-controlling interest activity
Balance at the beginning of the period			$ 23,960,000	$ 21,000,000
Net earnings	1,368,000	1,789,000	3,009,000	3,921,000
Dividend paid	(394,000)	(1,248,000)	(866,000)	(1,720,000)
Other			(100,000)	(200,000)
Balance at the end of the period	$ 26,044,000	$ 23,000,000	$ 26,044,000	$ 23,000,000