INVESTMENT SECURITIES - Contractual Final Maturity Distribution of Debt Securities Classified as Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Available for Sale, Fair Value
Within One Year	$ 101
After One But Within Five Years	102,259
After Five But Within Ten Years	11,552
Securities not due at a Single Maturity	180,136
Total	294,048
Available for Sale, Amortized Cost
Within One Year	101
After One But Within Five Years	101,132
After Five But Within Ten Years	11,205
Securities not due at a Single Maturity	177,306
Total	289,744
Held to Maturity, Fair Value
After Five But Within Ten Years	14,776
After Ten Years	20,045
Securities not due at a Single Maturity	83,241
Total	118,062	$ 120,093
Held to Maturity, Amortized Cost
After Five But Within Ten Years	14,338
After Ten Years	19,227
Securities not due at a Single Maturity	81,827
Total	115,392	119,674
U.S. Treasury Obligations
Available for Sale, Fair Value
Within One Year	101
After One But Within Five Years	25,260
Total	25,361
Available for Sale, Amortized Cost
Within One Year	101
After One But Within Five Years	24,966
Total	25,067
U.S. Agency Obligations
Held to Maturity, Fair Value
After Ten Years	20,045
Total	20,045	20,570
Held to Maturity, Amortized Cost
After Ten Years	19,227
Total	19,227	20,084
U.S. GSEs
Available for Sale, Fair Value
After One But Within Five Years	31,429
Total	31,429
Available for Sale, Amortized Cost
After One But Within Five Years	31,045
Total	31,045
Held to Maturity, Fair Value
After Five But Within Ten Years	9,807
Total	9,807	9,722
Held to Maturity, Amortized Cost
After Five But Within Ten Years	9,571
Total	9,571	9,556
FHLB Obligations
Available for Sale, Fair Value
After One But Within Five Years	45,570
After Five But Within Ten Years	11,552
Total	57,122
Available for Sale, Amortized Cost
After One But Within Five Years	45,121
After Five But Within Ten Years	11,205
Total	56,326
Held to Maturity, Fair Value
After Five But Within Ten Years	4,969
Total	4,969	4,834
Held to Maturity, Amortized Cost
After Five But Within Ten Years	4,767
Total	4,767	4,758
Agency MBSs
Available for Sale, Fair Value
Securities not due at a Single Maturity	93,301
Total	93,301
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	91,137
Total	91,137
Held to Maturity, Fair Value
Securities not due at a Single Maturity	7,038
Total	7,038	7,181
Held to Maturity, Amortized Cost
Securities not due at a Single Maturity	6,787
Total	6,787	7,027
Agency CMBSs
Available for Sale, Fair Value
Securities not due at a Single Maturity	24,672
Total	24,672
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	24,520
Total	24,520
Agency CMOs
Available for Sale, Fair Value
Securities not due at a Single Maturity	61,816
Total	61,816
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	61,338
Total	61,338
Held to Maturity, Fair Value
Securities not due at a Single Maturity	76,203
Total	76,203	77,786
Held to Maturity, Amortized Cost
Securities not due at a Single Maturity	75,040
Total	75,040	$ 78,249
ABSs
Available for Sale, Fair Value
Securities not due at a Single Maturity	347
Total	347
Available for Sale, Amortized Cost
Securities not due at a Single Maturity	311
Total	$ 311