DERIVATIVES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 item	Sep. 30, 2012	Sep. 30, 2013 item	Sep. 30, 2012	Dec. 31, 2012
Derivatives
Number of derivative financial instruments	21		21
Strike rate cash flow hedge swap agreements, low end of range (as a percent)	2.79%		2.79%
Strike rate cash flow hedge swap agreements, high end of range (as a percent)	6.32%		6.32%
Other assets - Fair Value of Swap Agreements	$ 7,530		$ 7,530
Other liabilities - Fair Value of Swap Agreements	(4,953)		(4,953)		(15,228)
Swap agreements increase (decrease) in interest expenses due to interest payments	(2,307)	(1,876)	(6,589)	(4,429)
Swap agreements gain (loss) recognized in OCI			10,837
Swap agreements gain (loss) reclassified from OCI - Interest expense			(6,589)
Credit risk derivative, fair value of derivatives in a net liability position	5,162		5,162
Low end of range
Derivatives
Notional Amounts	4,873		4,873
High end of range
Derivatives
Notional Amounts	$ 97,211		$ 97,211