SECURITIES (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Information related to available for sale securities [Abstract]
Fair Value	$ 478,440,000		$ 478,440,000		$ 467,391,000
Gross Unrealized Gain	15,604,000		15,604,000		14,768,000
Gross Unrealized Losses	(1,968,000)		(1,968,000)		(3,157,000)
Amortized Cost	464,804,000		464,804,000		455,780,000
Other-than-temporary impairment recognized in accumulated other comprehensive income	783,000		783,000		213,000
Maturities of Available-for-sale Debt Securities [Abstract]
Due in one year or less, amortized cost	1,793,000		1,793,000
Due after one year through five years, amortized cost	23,236,000		23,236,000
Due after five years through ten years, amortized cost	34,263,000		34,263,000
Due after ten years, amortized cost	23,106,000		23,106,000
Available for sale securities with maturities amortized cost	82,398,000		82,398,000
Mortgage-backed securities, amortized cost	382,406,000		382,406,000
Total debt securities amortized cost	464,804,000		464,804,000
Due in one year or less, fair value	1,797,000		1,797,000
Due after one year though five years, fair value	24,847,000		24,847,000
Due five years through ten years, fair value	36,820,000		36,820,000
Due after ten years, fair value	24,760,000		24,760,000
Available for sale securities with maturities fair value	88,224,000		88,224,000
Mortgage-backed securities, fair value	390,216,000		390,216,000
Total Securities	478,440,000		478,440,000
Sales of Securities Available for Sale [Abstract]
Proceeds	0	4,471,000	0	73,318,000
Gross gains	0	76,000	0	4,005,000
Gross losses	0	(44,000)	0	(4,171,000)
Number of securities sold			36
Fair value of sold security	478,440,000		478,440,000
Number of non-agency residential mortgage backed securities sold			6
Available-for-sale Securities pledged as collateral	216,500,000	259,300,000	216,500,000	259,300,000
Securities with unrealized losses [Abstract]
Less than twelve months, fair value	105,240,000		105,240,000		78,183,000
Less than 12 months, unrealized losses	(1,021,000)		(1,021,000)		(866,000)
12 months or more, fair value	22,861,000		22,861,000		29,701,000
12 months or more, unrealized losses	(947,000)		(947,000)		(2,291,000)
Total fair value	128,101,000		128,101,000		107,884,000
Total unrealized losses	(1,968,000)		(1,968,000)		(3,157,000)
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	39		39		26
Number of available-for-sale securities in unrealized loss positions, 12 months or more	9		9		12
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	48		48		38
Percentage of securities backed by the U.S. government, government agencies, government sponsored agencies or are A rated or better (in hundredths)			94.00%
Non-agency residential mortgage backed securities not issued by the federal government or government sponsored agencies	28,200,000		28,200,000		32,200,000
Other than temporary impairment losses, investments, available-for-sale securities, Total	475,000	0	985,000	121,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	869,000	194,000	359,000	1,812,000
Additions related to other-than-temporary impairment losses not previously recognized	198,000	0	747,000	0
Additional increase to the amount of credit loss for which other-than-temporary impairment was previously recognized	251,000	0	212,000	121,000
Reductions for previous credit losses realized on securities sold during the year	0	0	0	(1,739,000)
Balance	1,318,000	194,000	1,318,000	194,000
Investment [Line Items]
Other Than Temporary Impairment Since Purchase	1,318,000	194,000	1,318,000	194,000
Amortized Cost	464,804,000		464,804,000		455,780,000
Securities available for sale	478,440,000		478,440,000
One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	21,490,000		21,490,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	20,761,000		20,761,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	20,761,000		20,761,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	1,318,000		1,318,000
Investment [Line Items]
Other Than Temporary Impairment Since Purchase	1,318,000		1,318,000
Par Value	23,515,000		23,515,000
Amortized Cost	21,490,000		21,490,000
Securities available for sale	20,761,000		20,761,000
Unrealized Gain (Loss)	(729,000)		(729,000)
CWHL 2006-18 2A7 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	2,188,000		2,188,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	2,144,000		2,144,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	2,144,000		2,144,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	202,000		202,000
Investment [Line Items]
CUSIP	12543WAJ7		12543WAJ7
Other Than Temporary Impairment Since Purchase	202,000		202,000
Par Value	2,437,000		2,437,000
Amortized Cost	2,188,000		2,188,000
Securities available for sale	2,144,000		2,144,000
Unrealized Gain (Loss)	(44,000)		(44,000)
Lowest Credit Rating			C
1 Month Constant Default Rate	4.56		4.56
3 Month Constant Default Rate	6.87		6.87
6 Month Constant Default Rate	7.19		7.19
Credit Support	0.97		0.97
CWALT 2005-46CB A1 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	2,833,000		2,833,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	2,712,000		2,712,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	2,712,000		2,712,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	254,000		254,000
Investment [Line Items]
CUSIP	12667G6U2		12667G6U2
Other Than Temporary Impairment Since Purchase	254,000		254,000
Par Value	3,237,000		3,237,000
Amortized Cost	2,833,000		2,833,000
Securities available for sale	2,712,000		2,712,000
Unrealized Gain (Loss)	(121,000)		(121,000)
Lowest Credit Rating			C
1 Month Constant Default Rate	5.95		5.95
3 Month Constant Default Rate	5.35		5.35
6 Month Constant Default Rate	5.45		5.45
Credit Support	1.38		1.38
CWALT 2005-J8 1A3 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	4,083,000		4,083,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	3,987,000		3,987,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	3,987,000		3,987,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	348,000		348,000
Investment [Line Items]
CUSIP	12667GJ20		12667GJ20
Other Than Temporary Impairment Since Purchase	348,000		348,000
Par Value	4,620,000		4,620,000
Amortized Cost	4,083,000		4,083,000
Securities available for sale	3,987,000		3,987,000
Unrealized Gain (Loss)	(96,000)		(96,000)
Lowest Credit Rating			CC
1 Month Constant Default Rate	12.53		12.53
3 Month Constant Default Rate	6.77		6.77
6 Month Constant Default Rate	7.30		7.30
Credit Support	4.68		4.68
CHASE 2006-S3 1A5 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	624,000		624,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	664,000		664,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	664,000		664,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	197,000		197,000
Investment [Line Items]
CUSIP	16162XAE7		16162XAE7
Other Than Temporary Impairment Since Purchase	197,000		197,000
Par Value	823,000		823,000
Amortized Cost	624,000		624,000
Securities available for sale	664,000		664,000
Unrealized Gain (Loss)	40,000		40,000
Lowest Credit Rating			D
1 Month Constant Default Rate	5.74		5.74
3 Month Constant Default Rate	8.45		8.45
6 Month Constant Default Rate	8.33		8.33
Credit Support	0.00		0.00
CMSI 2007-61A5 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	2,098,000		2,098,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	2,106,000		2,106,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	2,106,000		2,106,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	0		0
Investment [Line Items]
CUSIP	173103AE2		173103AE2
Other Than Temporary Impairment Since Purchase	0		0
Par Value	2,100,000		2,100,000
Amortized Cost	2,098,000		2,098,000
Securities available for sale	2,106,000		2,106,000
Unrealized Gain (Loss)	8,000		8,000
Lowest Credit Rating			B
1 Month Constant Default Rate	4.05		4.05
3 Month Constant Default Rate	1.30		1.30
6 Month Constant Default Rate	3.54		3.54
Credit Support	6.60		6.60
GSR 2006-10F 1A1 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	2,971,000		2,971,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	2,821,000		2,821,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	2,821,000		2,821,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	0		0
Investment [Line Items]
CUSIP	36266WAC6		36266WAC6
Other Than Temporary Impairment Since Purchase	0		0
Par Value	3,194,000		3,194,000
Amortized Cost	2,971,000		2,971,000
Securities available for sale	2,821,000		2,821,000
Unrealized Gain (Loss)	(150,000)		(150,000)
Lowest Credit Rating			C
1 Month Constant Default Rate	0.00		0.00
3 Month Constant Default Rate	0.00		0.00
6 Month Constant Default Rate	0.00		0.00
Credit Support	0.67		0.67
MALT 2004-6 7 A1 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	2,773,000		2,773,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	2,804,000		2,804,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	2,804,000		2,804,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	0		0
Investment [Line Items]
CUSIP	576434SK1		576434SK1
Other Than Temporary Impairment Since Purchase	0		0
Par Value	2,791,000		2,791,000
Amortized Cost	2,773,000		2,773,000
Securities available for sale	2,804,000		2,804,000
Unrealized Gain (Loss)	31,000		31,000
Lowest Credit Rating			B
1 Month Constant Default Rate	0.00		0.00
3 Month Constant Default Rate	0.00		0.00
6 Month Constant Default Rate	0.00		0.00
Credit Support	11.84		11.84
MANA 2007-F1 1A1 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	1,771,000		1,771,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	1,468,000		1,468,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	1,468,000		1,468,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	0		0
Investment [Line Items]
CUSIP	59023YAA2		59023YAA2
Other Than Temporary Impairment Since Purchase	0		0
Par Value	1,806,000		1,806,000
Amortized Cost	1,771,000		1,771,000
Securities available for sale	1,468,000		1,468,000
Unrealized Gain (Loss)	(303,000)		(303,000)
Lowest Credit Rating			D
1 Month Constant Default Rate	0.00		0.00
3 Month Constant Default Rate	0.00		0.00
6 Month Constant Default Rate	0.00		0.00
Credit Support	0.00		0.00
RFMSI 2006-S5 A14 [Member] | One Rating Below Investment Grade [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	2,149,000		2,149,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	2,055,000		2,055,000
Sales of Securities Available for Sale [Abstract]
Fair value of sold security	2,055,000		2,055,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance	317,000		317,000
Investment [Line Items]
CUSIP	74957EAP2		74957EAP2
Other Than Temporary Impairment Since Purchase	317,000		317,000
Par Value	2,507,000		2,507,000
Amortized Cost	2,149,000		2,149,000
Securities available for sale	2,055,000		2,055,000
Unrealized Gain (Loss)	(94,000)		(94,000)
Lowest Credit Rating			D
1 Month Constant Default Rate	6.75		6.75
3 Month Constant Default Rate	5.06		5.06
6 Month Constant Default Rate	4.29		4.29
Credit Support	0.00		0.00
US Treasury Securities [Member]
Information related to available for sale securities [Abstract]
Fair Value	1,046,000		1,046,000		1,055,000
Gross Unrealized Gain	43,000		43,000		52,000
Gross Unrealized Losses	0		0		0
Amortized Cost	1,003,000		1,003,000		1,003,000
Investment [Line Items]
Amortized Cost	1,003,000		1,003,000		1,003,000
US Government Sponsored Agencies [Member]
Information related to available for sale securities [Abstract]
Fair Value	5,298,000		5,298,000		5,277,000
Gross Unrealized Gain	269,000		269,000		244,000
Gross Unrealized Losses	0		0		0
Amortized Cost	5,029,000		5,029,000		5,033,000
Investment [Line Items]
Amortized Cost	5,029,000		5,029,000		5,033,000
Agency Residential Mortgage-backed Securities [Member]
Information related to available for sale securities [Abstract]
Fair Value	362,009,000		362,009,000		350,102,000
Gross Unrealized Gain	9,383,000		9,383,000		8,989,000
Gross Unrealized Losses	(1,138,000)		(1,138,000)		(923,000)
Amortized Cost	353,764,000		353,764,000		342,036,000
Securities with unrealized losses [Abstract]
Less than twelve months, fair value	99,303,000		99,303,000		74,463,000
Less than 12 months, unrealized losses	(903,000)		(903,000)		(860,000)
12 months or more, fair value	11,689,000		11,689,000		4,813,000
12 months or more, unrealized losses	(235,000)		(235,000)		(63,000)
Total fair value	110,992,000		110,992,000		79,276,000
Total unrealized losses	(1,138,000)		(1,138,000)		(923,000)
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	27		27		21
Number of available-for-sale securities in unrealized loss positions, 12 months or more	4		4		1
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	31		31		22
Investment [Line Items]
Amortized Cost	353,764,000		353,764,000		342,036,000
Non-agency Residential Mortgage Backed Securities [Member]
Information related to available for sale securities [Abstract]
Fair Value	28,207,000		28,207,000		32,207,000
Gross Unrealized Gain	373,000		373,000		191,000
Gross Unrealized Losses	(808,000)		(808,000)		(2,225,000)
Amortized Cost	28,642,000		28,642,000		34,241,000
Maturities of Available-for-sale Debt Securities [Abstract]
Total Securities	73,300,000		73,300,000
Sales of Securities Available for Sale [Abstract]
Cost basis of securities sold	73,500,000		73,500,000
Fair value of sold security	73,300,000		73,300,000
Number of non-agency residential mortgage backed securities held	7		7
Securities with unrealized losses [Abstract]
Less than twelve months, fair value	3,981,000		3,981,000		3,379,000
Less than 12 months, unrealized losses	(96,000)		(96,000)		(4,000)
12 months or more, fair value	11,172,000		11,172,000		23,885,000
12 months or more, unrealized losses	(712,000)		(712,000)		(2,221,000)
Total fair value	15,153,000		15,153,000		27,264,000
Total unrealized losses	(808,000)		(808,000)		(2,225,000)
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	1		1		2
Number of available-for-sale securities in unrealized loss positions, 12 months or more	5		5		9
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	6		6		11
Number of non-agency residential mortgage backed securities rated AAA/Aaa	3		3
Number of non-agency residential mortgage backed securities	14		14
Number of securities downgraded	11		11
Number of non-agency residential mortgage backed securities downgraded to below investment grade	9		9
Other than temporary impairment losses, investments, available-for-sale securities, Total	449,000,000		959,000,000
Number of securities impaired	4		4
Investment [Line Items]
Amortized Cost	28,642,000		28,642,000		34,241,000
Securities available for sale	73,300,000		73,300,000
State and Municipal Securities [Member]
Information related to available for sale securities [Abstract]
Fair Value	81,880,000		81,880,000		78,750,000
Gross Unrealized Gain	5,536,000		5,536,000		5,292,000
Gross Unrealized Losses	(22,000)		(22,000)		(9,000)
Amortized Cost	76,366,000		76,366,000		73,467,000
Securities with unrealized losses [Abstract]
Less than twelve months, fair value	1,956,000		1,956,000		341,000
Less than 12 months, unrealized losses	(22,000)		(22,000)		(2,000)
12 months or more, fair value					1,003,000
12 months or more, unrealized losses					(7,000)
Total fair value	1,956,000		1,956,000		1,344,000
Total unrealized losses	(22,000)		(22,000)		(9,000)
Number of securities with unrealized losses [Abstract]
Number of available-for-sale securities in unrealized loss positions, less than 12 months	11		11		3
Number of available-for-sale securities in unrealized loss positions, 12 months or more	0		0		2
Available-for-sale, Securities in Unrealized Loss Positions, Number of Positions	11		11		5
Investment [Line Items]
Amortized Cost	$ 76,366,000		$ 76,366,000		$ 73,467,000