FAIR VALUES OF FINANCIAL INSTRUMENTS: (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Total realized/unrealized gains or losses
Beginning balance, January 1	$ 16,033	$ 16,007
Included in earnings	904	(542)
Included in other comprehensive income	3,155	1,556
Transfers	(1,186)	1,186
Settlements	(5,337)	(2,174)
Ending balance, December 31	13,569	16,033
Equity Securities
Total realized/unrealized gains or losses
Beginning balance, January 1		1,711
Included in earnings		(446)
Included in other comprehensive income		0
Settlements		(1,265)
Ending balance, December 31		0
State and municipal obligations
Total realized/unrealized gains or losses
Beginning balance, January 1	9,911	9,525
Included in earnings	0
Included in other comprehensive income	0
Transfers	(1,186)	1,186
Settlements	(4,200)	(800)
Ending balance, December 31	4,525	9,911
Collateralized debt obligations
Total realized/unrealized gains or losses
Beginning balance, January 1	6,122	4,771
Included in earnings	904	(96)
Included in other comprehensive income	3,155	1,556
Settlements	(1,137)	(109)
Ending balance, December 31	$ 9,044	$ 6,122