DERIVATIVES (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011 interestrateswaps	Dec. 31, 2010
Derivative [Line Items]
Number of interest rate swaps		1
Fair value of collateral pledged to secure interest rate contracts	$ 9,656,000	$ 14,679,000
Gain on retirement of long-term obligations	0	9,685,000	0
Loss on contract termination	2,824,000
Accumulated other comprehensive loss relating to terminated swap	11,002,000
Interest Rate Swap [Member]
Derivative [Line Items]
Incremental interest expense paid to interest rate swap counterparties	3,095,000	4,577,000	5,869,000
AOCI expected to be reclassified into income over the next 12 montths	1,937,000
2011 Swap [Member]
Derivative [Line Items]
Fixed rate payments, interest rate	5.50%
Basis dpread on variable rate	1.75%
Variable rate basis	3-month LIBOR
Outstanding trust preferred securities purchased and redeemed		21,500,000
Notional amount	93,500,000	93,500,000
Notional amount of interest rate derivatives		115,000
2006 Swap [Member]
Derivative [Line Items]
Fixed rate payments, interest rate	7.125%
Basis dpread on variable rate	1.75%
Variable rate basis	3-month LIBOR
Notional amount		$ 115,000,000