CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balances at Dec. 31, 2017	$ 127	$ 65,256	$ 99,662	$ (1,309)	$ 163,736
Net Income			4,058		4,058
Other comprehensive income (loss)				(2,069)	(2,069)
Stock-based compensation		143			143
Cash dividends declared			(891)		(891)
Balances at Mar. 31, 2018	127	65,399	102,829	(3,378)	164,977
Balances at Dec. 31, 2017	127	65,256	99,662	(1,309)	163,736
Net Income					12,903
Balances at Sep. 30, 2018	127	65,730	109,628	(4,066)	171,419
Balances at Mar. 31, 2018	127	65,399	102,829	(3,378)	164,977
Net Income			4,391		4,391
Other comprehensive income (loss)				(395)	(395)
Stock-based compensation		163			163
Cash dividends declared			(1,021)		(1,021)
Balances at Jun. 30, 2018	127	65,562	106,193	(3,767)	168,115
Cumulative effect adjustment (ASU 2016-01) | Accounting Standards Update 2016-01			(6)	6
Net Income			4,454		4,454
Other comprehensive income (loss)				(299)	(299)
Stock-based compensation		168			168
Cash dividends declared			(1,019)		(1,019)
Balances at Sep. 30, 2018	127	65,730	109,628	(4,066)	171,419
Cumulative effect adjustment (ASU 2016-01) | Accounting Standards Update 2016-01					1,300
Balances at Dec. 31, 2018	127	65,434	120,574	(2,950)	183,185
Net Income			3,754		3,754
Other comprehensive income (loss)				1,446	1,446
Stock-based compensation		63			63
Exercise of options and vesting of restricted stock, net of shares surrendered	1	(89)			(88)
Cash dividends declared			(1,278)		(1,278)
Balances at Mar. 31, 2019	128	65,408	123,050	(1,504)	187,082
Balances at Dec. 31, 2018	127	65,434	120,574	(2,950)	183,185
Net Income					12,184
Balances at Sep. 30, 2019	127	64,879	128,924	33	193,963
Balances at Mar. 31, 2019	128	65,408	123,050	(1,504)	187,082
Net Income			4,224		4,224
Other comprehensive income (loss)				1,311	1,311
Stock-based compensation		(32)			(32)
Cash dividends declared			(1,278)		(1,278)
Balances at Jun. 30, 2019	128	65,376	125,996	(193)	191,307
Net Income			4,206		4,206
Other comprehensive income (loss)				226	226
Retirement of common stock (in dollars)	(1)	(558)			(559)
Stock-based compensation		61			61
Cash dividends declared			(1,278)		(1,278)
Balances at Sep. 30, 2019	$ 127	$ 64,879	$ 128,924	$ 33	193,963
Cumulative effect adjustment (ASU 2016-01) | Accounting Standards Update 2016-01					$ 1,300