FAIR VALUE (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	$ 9,027		$ 15,671
Total gains or (losses)
Included in earnings	(6,293)	[1]	(13,996)	[1]
Included in accumulated other comprehensive loss (unrealized)	8,567	[1],[2]	7,363	[1],[2]
Purchases, issuances, sales, settlements			(11)	[3]
Sales	(9,357)	[3]
Settlements	291	[3]
Ending balance	2,235		9,027
Total gains or (losses)
Changes in unrealized losses included in earnings relating to assets still held at end of period	633		(14,447)
Derivative Payable
Reconciliation of the beginning and ending balances for major liability categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	(3,449)		(14,185)
Total gains or (losses)
Included in earnings	815		152
Purchases, issuances, sales, settlements			10,584
Ending balance	(2,634)		(3,449)
Changes in unrealized losses included in earnings relating to assets still held at end of period	(815)		(152)
Other Residential Mortgage-Backed Securities | Non-investment grade.
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	6,254		12,738
Total gains or (losses)
Included in earnings	(5,660)	[1]	(5,903)	[1]
Included in accumulated other comprehensive loss (unrealized)	8,763	[1],[2]	(152)	[1],[2]
Purchases, issuances, sales, settlements			(429)	[3]
Sales	(9,357)	[3]
Ending balance			6,254
Total gains or (losses)
Changes in unrealized losses included in earnings relating to assets still held at end of period			(6,340)
Corporate debt securities | Investment grade.
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance			978
Total gains or (losses)
Included in earnings			5	[1]
Included in accumulated other comprehensive loss (unrealized)			308	[1],[2]
Purchases, issuances, sales, settlements			(9)	[3]
Transfer from investment grade to non-investment grade			(1,282)
Corporate debt securities | Non-investment grade.
Reconciliation of the beginning and ending balances for major asset categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Beginning balance	2,773		1,955
Total gains or (losses)
Included in earnings	(633)	[1]	(8,098)	[1]
Included in accumulated other comprehensive loss (unrealized)	(196)	[1],[2]	7,207	[1],[2]
Purchases, issuances, sales, settlements			427	[3]
Settlements	291	[3]
Transfer from investment grade to non-investment grade			1,282
Ending balance	2,235		2,773
Total gains or (losses)
Changes in unrealized losses included in earnings relating to assets still held at end of period	$ 633		$ (8,107)

[1] Total gains or losses represent the total realized and unrealized gains and losses recorded for Level 3 assets and liabilities. Realized gains or losses are reported in the consolidated statements of income.

[2] Unrealized gains or losses on investment securities are reported in accumulated other comprehensive loss, net of tax in the consolidated statements of changes in stockholders' equity and comprehensive income.

[3] Purchases, issuances, sales and settlements represent Level 3 assets and liabilities that were either purchased, issued, sold, or settled during the period. The amounts are recorded at their end of period fair values.