OTHER COMPREHENSIVE INCOME (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Unrealized gains on available-for- sale securities, before tax amount [Abstract]
Unrealized gains (losses) arising during holding period, before tax amount	$ (61,640)		$ 3,043		$ 55,882
Reclassification adjustment for net (gains) realized in net income, before tax amount	(46)	[1]	(442)	[1]	(12,127)	[1]
Change in pension funding status before tax amount	27,128	[2]	(12,930)	[2]	(23,963)	[2]
Other comprehensive income (loss), before tax amount	(34,558)		(10,329)		19,792
Unrealized gains on available-for- sale securities, tax (expense) benefit [Abstract]
Unrealized gains (losses) arising during holding period, tax (expense) benefit	23,603		(1,171)		(21,405)
Reclassification adjustment for net (gains) losses realized in net income, tax (expense) benefit	18	[1]	169	[1]	4,639	[1]
Change in pension funding status cost, tax (expense) benefit	(10,376)	[2]	4,946	[2]	9,166	[2]
Other comprehensive (loss) income, tax (expense) benefit	13,245		3,944		(7,600)
Unrealized gains on available-for- sale securities, net of tax amount [Abstract]
Unrealized gains (losses) arising during holding period, net of tax amount	(38,037)		1,872		34,477
Reclassification adjustment for net (gains) losses realized in net income, net of tax amount	(28)	[1]	(273)	[1]	(7,488)	[1]
Change in pension funding status cost, net of tax amount	16,752	[2]	(7,984)	[2]	(14,797)	[2]
Other comprehensive (loss) income	$ (21,313)		$ (6,385)		$ 12,192

[1] Reclassification adjustments for net gains on available-for-sale securities are reported as security gains, net on the consolidated statement of income.

[2] Recognized employee benefit plan net periodic benefit cost include amortization of unrecognized transition amount, recognized prior service cost and recognized net loss. For more information, see Footnote 14 - Pension, Other Post Retirement Benefit and Profit Sharing Plans.