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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balances (in shares) at Dec. 31, 2019 9,746,979        
Balances at Dec. 31, 2019 $ 97 $ 120,544 $ 129,331 $ (1,814) $ 248,158
Net income 0 0 13,829 0 13,829
Pension liability adjustment 0 0 0 74 74
Unrealized gain (loss) on cash flow hedges, net of tax expense/benefit 0 0 0 (57) (57)
Share-based compensation expense $ 0 2,306 0 0 2,306
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)
Balances (in shares) at Sep. 30, 2020 9,805,437        
Balances at Sep. 30, 2020 $ 98 122,231 143,160 (1,797) 263,692
Balances (in shares) at Jun. 30, 2020 9,800,810        
Balances at Jun. 30, 2020 $ 98 121,358 135,893 (1,841) 255,508
Net income 0 0 7,267 0 7,267
Pension liability adjustment 0 0 0 25 25
Unrealized gain (loss) on cash flow hedges, net of tax expense/benefit 0 0 0 19 19
Share-based compensation expense $ 0 873 0 0 873
Issuance of common stock under stock compensation plans (in shares) 4,627        
Issuance of common stock under stock compensation plans $ 0 0 0 0 0
Balances (in shares) at Sep. 30, 2020 9,805,437        
Balances at Sep. 30, 2020 $ 98 122,231 143,160 (1,797) 263,692
Balances (in shares) at Dec. 31, 2020 9,805,437        
Balances at Dec. 31, 2020 $ 98 123,013 148,381 (1,866) 269,626
Net income 0 0 9,252 0 9,252
Pension liability adjustment 0 0 0 87 87
Unrealized gain (loss) on cash flow hedges, net of tax expense/benefit 0 0 0 73 73
Share-based compensation expense $ 0 2,437 0 0 2,437
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)
Balances (in shares) at Sep. 30, 2021 9,870,567        
Balances at Sep. 30, 2021 $ 99 124,283 157,633 (1,706) 280,309
Balances (in shares) at Jun. 30, 2021 9,870,567        
Balances at Jun. 30, 2021 $ 99 123,686 152,687 (1,760) 274,712
Net income 0 0 4,946 0 4,946
Pension liability adjustment 0 0 0 29 29
Unrealized gain (loss) on cash flow hedges, net of tax expense/benefit 0 0 0 25 25
Share-based compensation expense $ 0 597 0 0 597
Balances (in shares) at Sep. 30, 2021 9,870,567        
Balances at Sep. 30, 2021 $ 99 $ 124,283 $ 157,633 $ (1,706) $ 280,309