INVESTMENT AND MORTGAGE-BACKED SECURITIES, Continuous Unrealized Loss Position (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 0	[1]	$ 0	[2]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	4,004	[1]	3,705	[2]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total	4,004	[1]	3,705	[2]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	0	[1]	0	[2]
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	974	[1]	1,732	[2]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	974	[1]	1,732	[2]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Held To Maturity Securities With No OTTI Number of Securities	2
Held To Maturity Securities With No OTTI	4,978
Pass Through MBS Issued by GSEs [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	307		5,867
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	307		5,867
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	10		25
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	10		25
Private Issuer Pass Through MBS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value			0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value			955
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total			955
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses			0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses			7
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total			7
Registered Mututal Funds Member [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	539
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total	539
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	10
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses, Total	$ 10

[1] At September 30, 2013, the recorded balance of these securities was $3,840. This balance reflected the remaining unrealized loss of $1,156 that was recognized in accumulated other comprehensive loss on September 1, 2008 (the day these securities were transferred from available-for-sale to held-to-maturity). In accordance with both ASC 320-10-35-17 and 320-10-65, this unrealized loss is currently being amortized over the remaining estimated life of these securities.

[2] At December 31, 2012, the recorded balance of these securities was $4,170. This balance reflected the remaining unrealized loss of $1,268 that was recognized in accumulated other comprehensive loss on September 1, 2008 (the day these securities were transferred from available-for-sale to held-to-maturity). In accordance with both ASC 320-10-35-17 and 320-10-65, this unrealized loss is currently being amortized over the remaining estimated life of these securities.