| Apr 30, 2016 | Apr 30, 2017 | Apr 30, 2018 | Apr 30, 2019 | Apr 30, 2020 | Apr 30, 2021 | Apr 30, 2022 | Apr 30, 2023 | Apr 30, 2024 |
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| Cash and cash equivalents | 13 | 7 | 6 | 6 | 5 | 19 | 30 | 8 | 4 |
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| Equity securities | - | - | - | - | - | 24 | 18 | 15 | 16 |
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| Available-for-sale Fixed Income securities | - | - | - | - | - | 3 | 10 | 40 | 48 |
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| Accounts receivable, net of allowance for doubtful accounts of $31 and $36, respectively | 1 | 1 | 1 | 2 | 4 | 4 | 2 | 2 | 1 |
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| Prepaid and refundable income taxes | 0 | 0 | 0 | 0 | - | 1 | 1 | 0 | 0 |
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| Prepaid expenses and other current assets | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Total current assets | 20 | 26 | 27 | 31 | 41 | 51 | 61 | 66 | 71 |
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| Investment in EAM Trust | 58 | 58,223,000 | 58,233,000 | 58,625,000 | 59,165,000 | 60,977,000 | 60 | 59 | 60 |
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| Restricted money market investments | - | 469,000 | 469,000 | 469,000 | 469,000 | 469,000 | 0 | 0 | 0 |
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| Property, Plant and Equipment, Net | 4 | 1 | 1 | 1 | 10 | 8 | 7 | 6 | 4 |
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| Capitalized software and other intangible assets, net | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Total long term assets | 67 | 61 | 60 | 60 | 69 | 70 | 67 | 65 | 65 |
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| Total assets | 87 | 87 | 87 | 92 | 110 | 121 | 129 | 131 | 136 |
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| Accounts payable and accrued liabilities | 3 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 |
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| Accrued salaries | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Dividends payable | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
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| Accrued taxes on income | 0 | 0 | - | 0 | 1 | - | 0 | 0 | 0 |
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| Operating lease obligation-short term | - | - | - | - | 1 | 1 | 1 | 1 | 1 |
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| Unearned revenue | - | - | - | 20 | 19 | 19 | 18 | 17 | 16 |
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| Total current liabilities | 26 | 25 | 25 | 25 | 27 | 28 | 24 | 23 | 22 |
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| Unearned revenue | 5 | 5 | 6 | 5 | 6 | 6 | 6 | 6 | 7 |
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| Operating lease obligation-long term | - | - | - | - | 8 | 7 | 6 | 5 | 4 |
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| Deferred income taxes | - | - | - | - | 13 | 13 | 13 | 13 | 13 |
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| Total long term liabilities | 26 | 25 | 18 | 19 | 29 | 26 | 25 | 24 | 23 |
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| Total liabilities | 52 | 49 | 43 | 44 | 56 | 54 | 49 | 47 | 45 |
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| Common stock, $0.10 par value; authorized 30,000,000 shares; issued 10,000,000 shares | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Additional paid-in capital | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
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| Retained earnings | 36 | 39 | 45 | 49 | 56 | 73 | 88 | 96 | 104 |
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| Treasury stock, at cost (577,517 shares and 565,460 shares, respectively) | - | - | - | - | - | - | - | 15 | 15 |
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| Accumulated other comprehensive income, net of tax | 0 | 0 | 1 | 2 | 1 | 0 | -0 | 0 | -0 |
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| Total shareholders' equity | 35 | 38 | 44 | 48 | 54 | 67 | 80 | 84 | 91 |
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| Total liabilities and shareholders' equity | 87 | 87 | 87 | 92 | 110 | 121 | 129 | 131 | 136 |
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