REVENUE RECOGNITION - Noninterest income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Total Non-interest Income	$ 5,419	$ 4,701	$ 3,072
Noninterest Income (in-scope of Topic 606) [Member]
Disaggregation of Revenue [Line Items]
Total Non-interest Income	3,211	2,781	1,859
Noninterest Income (out-of-scope of Topic 606) [Member]
Disaggregation of Revenue [Line Items]
Total Non-interest Income	2,208	1,920	1,213
Service Charges on Deposit Accounts [Member]
Disaggregation of Revenue [Line Items]
Total Non-interest Income	1,161	1,124	899
Other [Member]
Disaggregation of Revenue [Line Items]
Total Non-interest Income	$ 2,050	$ 1,657	$ 960