Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	COMMON STOCK	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	TREASURY STOCK, AT COST
Balance at beginning of year at Dec. 31, 2018		$ 186,163	$ 83,630	$ (4,030)	$ (3,443)
Net income	$ 16,931		16,931
Dividends declared			(5,004)
Issued treasury shares under the Long Term Incentive Plan		(1,140)
Issued shares as part of a business combination		0
Stock compensation expense for unvested shares		664
Other comprehensive income	11,907			11,907
Purchased shares					(1,388)
Issued shares under the Long Term Incentive Plan					1,140
Retained shares to cover tax withholdings under the Long Term Incentive Plan					(605)
Balance at end of year at Jun. 30, 2019	284,825	185,687	95,557	7,877	(4,296)
Balance at beginning of year at Mar. 31, 2019		186,483	89,518	595	(3,645)
Net income	8,543		8,543
Dividends declared			(2,504)
Issued treasury shares under the Long Term Incentive Plan		(1,140)
Stock compensation expense for unvested shares		344
Other comprehensive income	7,282			7,282
Purchased shares					(1,186)
Issued shares under the Long Term Incentive Plan					1,140
Retained shares to cover tax withholdings under the Long Term Incentive Plan					(605)
Balance at end of year at Jun. 30, 2019	284,825	185,687	95,557	7,877	(4,296)
Balance at beginning of year at Dec. 31, 2019	299,309	186,345	108,851	9,826	(5,713)
Net income	19,650		19,650
Dividends declared			(6,440)
Issued treasury shares under the Long Term Incentive Plan		(1,195)
Issued shares as part of a business combination		22,554
Stock compensation expense for unvested shares		686
Other comprehensive income	10,210			10,210
Purchased shares					(14,238)
Issued shares under the Long Term Incentive Plan					1,195
Retained shares to cover tax withholdings under the Long Term Incentive Plan					(379)
Balance at end of year at Jun. 30, 2020	331,352	208,390	122,061	20,036	(19,135)
Balance at beginning of year at Mar. 31, 2020		209,214	114,351	(28)	(19,940)
Net income	11,011		11,011
Dividends declared			(3,301)
Issued treasury shares under the Long Term Incentive Plan		(1,173)
Stock compensation expense for unvested shares		349
Other comprehensive income	20,064			20,064
Purchased shares					0
Issued shares under the Long Term Incentive Plan					1,173
Retained shares to cover tax withholdings under the Long Term Incentive Plan					(368)
Balance at end of year at Jun. 30, 2020	$ 331,352	$ 208,390	$ 122,061	$ 20,036	$ (19,135)