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Consolidated Statements of Stockholders' Equity - 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]
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balances (in shares) at Dec. 31, 2018           9,735,055        
Beginning balance (Accounting Standards Update 2014-09 [Member]) at Dec. 31, 2018 $ 0 $ 0 $ 235 $ (235) $ 0          
Beginning balance at Dec. 31, 2018           $ 97 $ 118,835 $ 101,194 $ (1,536) $ 218,590
Net income           0 0 27,902 0 27,902
Pension liability adjustment           0 0 0 16 16
Unrealized loss on cash flow hedges           $ 0 0 0 (59) (59)
Issuance of common stock under stock compensation plans (in shares)           11,924        
Issuance of common stock under stock compensation plans           $ 0 0 0 0 0
Share-based compensation expense           $ 0 1,709 0 0 1,709
Balances (in shares) at Dec. 31, 2019           9,746,979        
Ending balance at Dec. 31, 2019           $ 97 120,544 129,331 (1,814) 248,158
Net income           0 0 19,050 0 19,050
Pension liability adjustment           0 0 0 (25) (25)
Unrealized loss on cash flow hedges           $ 0 0 0 (27) (27)
Issuance of common stock under stock compensation plans (in shares)           58,458        
Issuance of common stock under stock compensation plans           $ 1 (619) 0 0 (618)
Share-based compensation expense           $ 0 3,088 0 0 3,088
Balances (in shares) at Dec. 31, 2020           9,805,437        
Ending balance at Dec. 31, 2020           $ 98 123,013 148,381 (1,866) 269,626
Net income           0 0 11,523 0 11,523
Pension liability adjustment           0 0 0 308 308
Unrealized loss on cash flow hedges           $ 0 0 0 (124) (124)
Issuance of common stock under stock compensation plans (in shares)           65,130        
Issuance of common stock under stock compensation plans           $ 1 (1,167) 0 0 (1,166)
Share-based compensation expense           $ 0 3,216 0 0 3,216
Balances (in shares) at Dec. 31, 2021           9,870,567        
Ending balance at Dec. 31, 2021           $ 99 $ 125,062 $ 159,904 $ (1,682) $ 283,383