CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and interest-bearing deposits in banks	$ 31,687	$ 37,170
Securities available-for-sale	341,873	318,159
Other assets	10,131	6,352
Total assets	1,943,340	1,927,733
Liabilities:
Junior subordinated debentures	22,167	22,167
Other	7,482	4,771
Total liabilities	1,728,964	1,714,596
Stockholders’ equity	214,376	213,137	$ 209,012	$ 190,749
Total liabilities and stockholders’ equity	1,943,340	1,927,733
Expenses:
Professional fees	1,855	1,560	1,802
Income before income taxes	13,296	15,600	26,468
Income tax benefit	(3,857)	(4,583)	(7,358)
Net earnings	9,439	11,017	19,110
Cash flows from operating activities:
Net earnings	9,439	11,017	19,110
Adjustments to reconcile net earnings to net cash provided by operating activities:
Net cash provided by operating activities	26,843	29,185	29,758
Cash flows from investing activities:
Purchases of securities available-for-sale	(104,491)	(156,449)	(1,250)
Proceeds from maturities and calls of securities available-for-sale	68,696	70,934	48,464
Proceeds from sale of securities available-for-sale	6,803	40,277	22,153
Net cash used in investing activities	(39,832)	(12,297)	(65,313)
Cash flows from financing activities:
Proceeds from exercise of stock options	0	99	643
Payment of dividends on preferred stock	(2,221)	(689)	(704)
Payment of dividends on common stock	(4,095)	(4,086)	(3,838)
Repayments of notes payable	0	0	(1,000)
Net cash provided by (used in) financing activities	6,016	(14,559)	62,696
Net (decrease) increase in cash and cash equivalents	(6,973)	2,329	27,141
Cash and cash equivalents, beginning of year	89,201	86,872	59,731
Cash and cash equivalents, end of year	82,228	89,201	86,872
Parent Company
Assets
Cash and interest-bearing deposits in banks	16,705	14,795
Other assets	2,058	2,117
Investment in and advances to subsidiaries	220,906	220,753
Total assets	239,669	237,665
Liabilities:
Dividends payable	1,835	1,195
Junior subordinated debentures	22,167	22,167
ESOP obligation	1,233	1,093
Other	58	73
Total liabilities	25,293	24,528
Stockholders’ equity	214,376	213,137
Total liabilities and stockholders’ equity	239,669	237,665
Revenue:
Dividends from Bank and nonbank subsidiaries	9,000	9,000	15,500
Gain on sale of securities	0	1,125	0
Rental and other income	57	57	87
Total revenue	9,057	10,182	15,587
Expenses:
Interest on short- and long-term debt	704	613	1,087
Professional fees	236	253	217
Other expenses	785	733	844
Total expenses	1,725	1,599	2,148
Income before income taxes	7,332	8,583	13,439
Equity in undistributed earnings of subsidiaries	1,529	2,317	4,955
Income tax benefit	578	117	716
Net earnings	9,439	11,017	19,110
Cash flows from operating activities:
Net earnings	9,439	11,017	19,110
Adjustments to reconcile net earnings to net cash provided by operating activities:
Undistributed earnings of subsidiaries	(1,529)	(2,317)	(4,955)
Gain on sale of securities available-for-sale	0	(1,125)	0
Other, net	73	528	(872)
Net cash provided by operating activities	7,983	8,103	13,283
Cash flows from investing activities:
Proceeds from maturities and calls of securities available-for-sale	0	0	198
Proceeds from sale of securities available-for-sale	0	1,392	0
Other, net	0	(83)	217
Net cash used in investing activities	0	1,309	415
Cash flows from financing activities:
Proceeds from exercise of stock options	0	99	643
Payment of dividends on preferred stock	(2,221)	(689)	(704)
Payment of dividends on common stock	(4,095)	(4,086)	(3,838)
Purchase of treasury stock	0	0	(9)
Repayments of notes payable	0	0	(8,217)
Other, net	243	607	0
Net cash provided by (used in) financing activities	(6,073)	(4,069)	(12,125)
Net (decrease) increase in cash and cash equivalents	1,910	5,343	1,573
Cash and cash equivalents, beginning of year	14,795	9,452	7,879
Cash and cash equivalents, end of year	$ 16,705	$ 14,795	$ 9,452