Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations (Unaudited) (Details)

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Quarterly Results of Operations (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Quarterly Results of Operations (Unaudited)                    
Net sales $ 75,508 $ 68,911 $ 75,350 $ 62,813 $ 71,445 $ 60,919 $ 56,586 $ 62,618 $ 282,582 $ 251,568
Gross profit 12,575 11,319 10,979 10,843 10,525 7,237 7,114 8,164 45,716 33,040
Net income $ 3,447 $ 2,440 $ 1,791 $ 1,520 $ 2,527 $ 530 $ 581 $ 836 $ 9,198 $ 4,474
Basic net income per share $ 0.78 $ 0.55 $ 0.41 $ 0.35 $ 0.58 $ 0.13 $ 0.13 $ 0.18 $ 2.09 $ 1.01
Diluted net income per share $ 0.78 $ 0.55 $ 0.41 $ 0.35 $ 0.58 $ 0.13 $ 0.13 $ 0.18 $ 2.09 $ 1.01