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v3.3.1.900

Investments (Detail Textuals) - USD ($) | 9 Months Ended |
--- | --- | ---
Jan. 31, 2016 | Jan. 31, 2015 | Apr. 30, 2015
Schedule of Available-for-sale Securities [Line Items] |  |  |
Aggregate cost of equity securities available for sale | $ 4,625,000 |  | $ 9,470,000
Proceeds from sales of equity securities classified as available-for-sale | 8,789,000 | $ 57,000 |
Capital losses | 15,000 |  |
Fair value of equity securities | $ 4,550,000 |  | 9,632,000
Percentage of annual dividend return on investment | 3.00% |  |
Decrease in gross unrealized gains on equity securities classified as available-for-sale | $ (237,000) | (51,000) |
Equity Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Aggregate cost of equity securities available for sale | 4,625,000 |  | 9,470,000
Proceeds from sales of equity securities classified as available-for-sale | 8,789,000 | 57,000 |
Capital losses | 15,000 |  |
Fair value of equity securities | 4,550,000 |  | 9,632,000
Decrease in gross unrealized gains on equity securities classified as available-for-sale |  | 51,000 |
Deferred taxes on unrealized gains on securities |  | $ 18,000 |
Increase in gross unrealized losses on equity securities | 237,000 |  |
Deferred taxes on unrealized losses on securities | 84,000 |  |
Accumulated other comprehensive income included unrealized losses, net of tax | 74,000 |  | 162,000
Deferred taxes on accumulated other comprehensive income | $ 26,000 |  | $ 57,000

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