INVESTMENT SECURITIES - Contractual Final Maturity Distribution of Debt Securities Classified as Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Available for Sale, Fair Value
Within One Year	$ 10,120
After One But Within Five Years	121,766
After Five But Within Ten Years	6,223
Securities not due at a Single Maturity	160,864
Total	298,973
Available for Sale, Amortized Cost
Within One Year	10,093
After One But Within Five Years	120,466
After Five But Within Ten Years	5,919
Securities not due at a Single Maturity	158,094
Total	294,572
Held to Maturity, Fair Value
After Ten Years	18,903
Securities not due at a Single Maturity	74,115
Total	93,018	$ 120,093
Held to Maturity, Amortized Cost
After Ten Years	18,073
Securities not due at a Single Maturity	72,599
Total	90,672	119,674
U.S. Treasury Obligations
Available for Sale, Fair Value
Within One Year	10,120
After One But Within Five Years	15,213
Total	25,333
Available for Sale, Amortized Cost
Within One Year	10,093
After One But Within Five Years	14,983
Total	25,076
U.S. Agency Obligations
Held to Maturity, Fair Value
After Ten Years	18,903
Total	18,903	20,570
Held to Maturity, Amortized Cost
After Ten Years	18,073
Total	18,073	20,084
U.S. GSEs
Available for Sale, Fair Value
After One But Within Five Years	49,529
Total	49,529
Available for Sale, Amortized Cost
After One But Within Five Years	49,030
Total	49,030
Held to Maturity, Fair Value
Total		9,722
Held to Maturity, Amortized Cost
Total		9,556
FHLB Obligations
Available for Sale, Fair Value
After One But Within Five Years	57,024
After Five But Within Ten Years	6,223
Total	63,247
Available for Sale, Amortized Cost
After One But Within Five Years	56,453
After Five But Within Ten Years	5,919
Total	62,372
Held to Maturity, Fair Value
Total		4,834
Held to Maturity, Amortized Cost
Total		4,758
Agency MBSs
Available for Sale, Fair Value
Securities not due at a Single Maturity	82,293
Total	82,293
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	80,061
Total	80,061
Held to Maturity, Fair Value
Securities not due at a Single Maturity	6,429
Total	6,429	7,181
Held to Maturity, Amortized Cost
Securities not due at a Single Maturity	6,143
Total	6,143	7,027
Agency CMBSs
Available for Sale, Fair Value
Securities not due at a Single Maturity	24,280
Total	24,280
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	24,162
Total	24,162
Agency CMOs
Available for Sale, Fair Value
Securities not due at a Single Maturity	53,961
Total	53,961
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	53,576
Total	53,576
Held to Maturity, Fair Value
Securities not due at a Single Maturity	67,686
Total	67,686	77,786
Held to Maturity, Amortized Cost
Securities not due at a Single Maturity	66,456
Total	66,456	$ 78,249
ABSs
Available for Sale, Fair Value
Securities not due at a Single Maturity	330
Total	330
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	295
Total	$ 295