5. INVESTMENT SECURITIES - Amortized Cost and Fair Value Of Investment Securities Contractual Maturity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Investment securities activity
Due in one year or less, Amortized Cost
Due after one year through five years, Amortized Cost	$ 3,178
Due after five years through ten years, Amortized Cost	13,521
Due after ten years, Amortized Cost	85,439
Amortized Cost, Total	$ 102,138	$ 100,174
Due in one year or less, Fair Value
Due after one year through five years, Fair Value	$ 3,176
Due after five years through ten years, Fair Value	13,459
Due after ten years, Fair Value	85,007
Approximate Fair Value	$ 101,642	$ 100,069
Due in one year or less, Weighted Average Yield
Due after one year through five years, Weighted Average Yield	1.22%
Due after five years through ten years, Weighted Average Yield	2.09%
Due after ten years, Weighted Average Yield	1.94%
Weighted Average Yield, Total	1.93%