PARENT COMPANY FINANCIAL INFORMATION (Condensed Statement of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Cash Flows From Operating Activities:
Net income	$ 7,863	$ 7,683	$ 6,057	$ 8,531	$ 6,285	$ 7,113	$ 5,865	$ 6,291	$ 30,134	$ 25,554
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Stock based compensation expense									3,067	2,151
Net cash used in operating activities									40,957	27,060
Cash Flows From Financing Activities:
Net cash used in investing activities									(1,014,789)	(454,570)
Cash flows from financing activities:
Redemption of common stock for tax withholdings for restricted stock vesting									(89)	(132)
Proceeds from exercise of stock options										360
Net cash provided by financing activities									1,132,103	399,229
Net (decrease) increase in cash and cash equivalents									158,271	(28,281)
Cash and cash equivalents at the beginning of the period				232,950					232,950
Cash and cash equivalents at the end of the period	391,221				232,950				391,221	232,950
Parent Company
Cash Flows From Operating Activities:
Net income									30,134	25,554
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Undistributed earnings of subsidiary bank									(35,209)	(28,094)
Non-employee stock based compensation									400	440
Amortization of trust preferred issuance costs									56	56
Stock based compensation expense									2,667	1,711
Decrease (increase) in other assets									274	(2,910)
Increase (decrease) in other liabilities									56	(167)
Net cash used in operating activities									(1,622)	(3,410)
Cash flows from financing activities:
Proceeds from issuance of common stock, net										(33)
Redemption of common stock for tax withholdings for restricted stock vesting									(89)	(131)
Proceeds from exercise of stock options										360
Net cash provided by financing activities									(89)	196
Net (decrease) increase in cash and cash equivalents									(1,711)	(3,214)
Cash and cash equivalents at the beginning of the period				$ 3,547				$ 6,761	3,547	6,761
Cash and cash equivalents at the end of the period	$ 1,836				$ 3,547				$ 1,836	$ 3,547