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STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2019 | Jun. 30, 2018
Income Statement [Abstract] |  |
Net sales | $ 27,172 | $ 22,465
Cost of sales | 17,392 | 14,522
Gross profit | 9,780 | 7,943
Operating (income) expenses: |  |
Selling expenses | 415 | 358
General and administrative expenses | 2,492 | 2,287
Asset impairment charges |  | 1,029
Gain on disposal of equipment | (7) | (16)
Research and development costs | 1,882 | 1,893
Total operating expenses | 4,782 | 5,551
Operating income | 4,998 | 2,392
Other income (expense): |  |
Interest and dividend income | 268 | 225
Other income | 45 |
Gain on sale of investments | 356 |
Interest expense | (220) | (7)
Total other income | 449 | 218
Income before income taxes | 5,447 | 2,610
Income tax expense | 1,299 | 989
Net income | 4,148 | 1,621
Other comprehensive loss, net of tax: |  |
Unrealized loss from marketable equity investments, net of income taxes | (396) | (186)
Comprehensive income | $ 3,752 | $ 1,435
Basic & Diluted income per share: |  |
Basic net income per share | $ 0.99 | $ 0.38
Diluted net income per share | $ 0.97 | $ 0.37
Weighted average common shares outstanding: |  |
Basic | 4,192,365 | 4,304,602
Diluted | 4,298,332 | 4,344,765

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period and/or any unrealized gains or losses on investments that are separately or otherwise not categorized as trading or available-for-sale. + References No definition available. + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1505-109256 + Details
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