SECURITIES: (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Rollforward of the credit losses recognized in earnings
Beginning balance, January 1,	$ 15,180	$ 15,070	$ 11,359
Amounts related to the credit loss for which other-than-temporary impairment was previously recognized	11	110	(549)
Amounts realized for securities sold during the period	(208)	0	0
Reductions for increase in cash flows expected to be collected that are recognized over the remaining life of the security	0	0	0
Increases to the amount related to the credit loss for which other- than-temporary impairment was previously recognized	0	0	4,260
Ending balance, December 31,	$ 14,983	$ 15,180	$ 15,070