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Business acquisitions - Additional Information (Detail) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jul. 31, 2016 USD ($) $ / shares | Jul. 31, 2016 USD ($) $ / shares shares | Jun. 05, 2015
Payments to Acquire Businesses, Gross |  | $ 2,100,000 |
Revenues | $ 7,640,000 | 22,159,000 |
Selling, General and Administrative Expense | 2,577,000 | 7,261,000 |
Accrued Earn Out Liability | $ 869,000 | 869,000 |
Rel-Tech Electronics, Inc |  |  |
Business Acquisition, Additional Payment In Cash |  | $ 800,000 |
Business Acquisition Unregistered Common Stock Shares | shares |  | 50,467 |
Business Acquisition Unregistered Common Stock Value |  | $ 200,000 |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 100.00%
Payments to Acquire Businesses, Gross |  | $ 3,100,000 |
Business Acquisition, Share Price | $ / shares | $ 3.96 | $ 3.96 |
Revenues | $ 1,700,000 | $ 5,000,000 |
Selling, General and Administrative Expense | 28,000 | 148,000 |
Accrued Earn Out Liability Current | 598,000 | 598,000 |
Accrued Earn Out Liability | 758,000 | 758,000 |
Accrued Earn Out Liability Non Current | 161,000 | 161,000 |
Rel-Tech Electronics, Inc | Palumbo |  |  |
Salary Payable To President |  | $ 150,000 |
Description For President Annual Bonus |  | earn an annual bonus of up to 50% of his base salary |
Comnet Telecom Supply Inc |  |  |
Business Acquisition Cost Of Acquired Entity Purchase Price value | $ 1,060,000 | $ 1,060,000 |
Business Acquisition Unregistered Common Stock Shares | shares |  | 252,381 |
Business Acquisition, Percentage of Voting Interests Acquired | 100.00% | 100.00% |
Payments to Acquire Businesses, Gross |  | $ 3,090,000 |
Business Acquisition, Share Price | $ / shares | $ 4.20 | $ 4.20 |
Revenues | $ 2,200,000 | $ 6,800,000 |
Selling, General and Administrative Expense | 30,000 | 170,000 |
Accrued Earn Out Liability Current | 271,000 | 271,000 |
Escrow Deposit Disbursements Related to Property Acquisition |  | 300,000 |
Comnet Telecom Supply Inc | Mr. Portera |  |  |
Business Acquisition Cost Of Acquired Entity Purchase Price value | 4,150,000 | 4,150,000 |
Business Acquisition, Additional Payment In Cash |  | $ 1,360,000 |
Description For President Annual Bonus |  | earn an annual bonus of up to 50% of his base salary. |
Business Combination, Consideration Transferred |  | $ 210,000 |
Business Acquisition Cost Of Acquired Entity Purchases Price | $ 4,150,000 | $ 4,150,000 |

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- Definition A reserve for the amount of payments owed to an Entity from the sale of an Entity or business, based on future sales or revenues, which the selling entity deems uncollectible. + References No definition available. + Details
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