INCOME TAXES: (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits
Balance at January 1	$ 777	$ 862	$ 901
Additions based on tax positions related to the current year	65	86	137
Additions based on tax positions related to prior years	0	0	0
Reductions due to the statute of limitations	(166)	(171)	(176)
Balance at December 31	$ 676	$ 777	$ 862