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v3.22.1

Consolidated Statements of Income - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Revenue |  |
Product sales | $ 28,500 | $ 26,776
Barrier rentals | 9,925 | 6,879
Royalty income | 2,216 | 1,688
Shipping and installation revenue | 10,001 | 8,519
Total revenue | 50,642 | 43,862
Cost of goods sold | 36,222 | 32,820
Gross profit | 14,420 | 11,042
General and administrative expenses | 5,416 | 4,989
Selling expenses | 2,836 | 2,294
Total operating expenses | 8,252 | 7,283
Operating income | 6,168 | 3,759
Other income (expense) |  |
Interest expense | 190 | 217
Interest income | 35 | 35
Gain on sale of assets | 317 | 133
Gain on forgiveness of PPP loan | 2,692 | 0
Other Income | 72 | 82
Total other income (expense), net | 2,926 | 33
Income before income tax expense | 9,094 | 3,792
Income tax expense | 1,524 | 1,127
Net income | $ 7,570 | $ 2,665
Basic earnings per share | $ 1.45 | $ 0.51
Diluted earnings per share | $ 1.43 | $ 0.51

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