INVESTMENT AND MORTGAGE-BACKED SECURITIES, Continuous Unrealized Loss Position (Details) $ in Thousands	Jun. 30, 2017 USD ($) Security	Dec. 31, 2016 USD ($)
Pooled Bank Trust Preferred Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Number of TRUP securities not deemed having OTTI | Security	1
Number of TRUP securities deemed have OTTI | Security	1
Held-to-Maturity Securities, Fair Value [Abstract]
Less than 12 Consecutive Months	$ 0	$ 0
12 Consecutive Months or Longer	2,549	2,439
Total	2,549	2,439
Held-to-Maturity Securities, Unrealized Losses [Abstract]
Less than 12 Consecutive Months	0	0
12 Consecutive Months or Longer	91	303
Total	91	303
Registered Mutual Funds [Member]
Available-for-Sale Securities, Fair Value [Abstract]
Less than 12 Consecutive Months	1,099	1,308
12 Consecutive Months or Longer	1,595	1,747
Total	2,694	3,055
Available-for-Sale Securities, Unrealized Losses [Abstract]
Less than 12 Consecutive Months	25	47
12 Consecutive Months or Longer	56	131
Total	81	178
Agency Collateralized Mortgage Obligation ("CMO") [Member]
Available-for-Sale Securities, Fair Value [Abstract]
Less than 12 Consecutive Months	0	3,186
12 Consecutive Months or Longer	3,153	0
Total	3,153	3,186
Available-for-Sale Securities, Unrealized Losses [Abstract]
Less than 12 Consecutive Months	0	61
12 Consecutive Months or Longer	54	0
Total	$ 54	$ 61