XML 19 R8.htm IDEA: XBRL DOCUMENT v3.23.1
Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Cumulative Effect, Period of Adoption, Adjustment [Member]
Common Stock [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Additional Paid-in Capital [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
AOCI Attributable to Parent [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
First National Corporation 2014 Stock Incentive Plan [Member]
Common Stock [Member]
First National Corporation 2014 Stock Incentive Plan [Member]
Additional Paid-in Capital [Member]
First National Corporation 2014 Stock Incentive Plan [Member]
Retained Earnings [Member]
First National Corporation 2014 Stock Incentive Plan [Member]
AOCI Attributable to Parent [Member]
First National Corporation 2014 Stock Incentive Plan [Member]
Stock Repurchase Plan [Member]
Common Stock [Member]
Stock Repurchase Plan [Member]
Additional Paid-in Capital [Member]
Stock Repurchase Plan [Member]
Retained Earnings [Member]
Stock Repurchase Plan [Member]
AOCI Attributable to Parent [Member]
Stock Repurchase Plan [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance at Dec. 31, 2021                               $ 7,785 $ 31,966 $ 76,990 $ 298 $ 117,039
Net income                               0 0 3,729 0 3,729
Other comprehensive income (loss)                               0 0 0 (13,690) (13,690)
Cash dividends on common stock                               0 0 (874) 0 (874)
Stock-based compensation                               0 485 0 0 485
Issuance of common stock, dividend reinvestment plan                               3 54 0 0 57
Issuance of common stock, stock incentive plan                               34 (34) 0 0 0
Repurchase of common stock, stock incentive plan           $ (10) $ (173) $ 0 $ 0 $ (183)                    
Balance at Mar. 31, 2022                               7,812 32,298 79,845 (13,392) 106,563
Balance (Accounting Standards Update 2016-13 [Member]) at Dec. 31, 2022 $ 0 $ 0 $ (1,952) $ 0 $ (1,952)                              
Balance at Dec. 31, 2022                               7,831 32,716 90,284 (22,471) 108,360
Net income                               0 0 3,849 0 3,849
Other comprehensive income (loss)                               0 0 0 2,255 2,255
Cash dividends on common stock                               0 0 (942) 0 (942)
Stock-based compensation                               0 338 0 0 338
Issuance of common stock, dividend reinvestment plan                               3 38 0 0 41
Issuance of common stock, stock incentive plan                               27 (27) 0 0 0
Repurchase of common stock, stock incentive plan           $ (8) $ (105) $ 0 $ 0 $ (113) $ (2) $ (23) $ 0 $ 0 $ (25)          
Balance at Mar. 31, 2023                               $ 7,851 $ 32,937 $ 91,239 $ (20,216) $ 111,811