Significant Accounting Policies (Policies)	9 Months Ended
Significant Accounting Policies (Policies)	Aug. 31, 2019
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Statement Presentation The foregoing condensed consolidated financial statements of the Company are unaudited and reflect all adjustments (consisting only of normal recurring adjustments) that are, in the opinion of management, necessary for a fair presentation of the Company’s financial position and operating results for the interim periods. The financial statements should be read in conjunction with the financial statements and notes thereto contained in the Company’s Annual Report on Form 10 -K for the fiscal year ended November 30, 2018. The results of operations for the three and nine months ended August 31, 2019 are not necessarily indicative of the results for the fiscal year ending November 30, 2019. During the second quarter of fiscal 2018, the Company liquidated its investment in its Canadian subsidiary (“International”) by selling off remaining inventory and filing dissolution paperwork. Prior to that liquidation and dissolution, the financial books of the Company’s Canadian operations were kept in the functional currency of Canadian dollars and the financial statements were converted to U.S. Dollars for consolidation. When consolidating the financial results of Canadian operations into U.S. Dollars for reporting purposes, the Company used the All-Current translation method. The All-Current translation method requires the balance sheet assets and liabilities to be translated to U.S. Dollars at the exchange rate as of quarter-end. Stockholders’ equity was translated at historical exchange rates and retained earnings were translated at an average exchange rate for the period. Additionally, revenue and expenses were translated at average exchange rates for the periods presented. The resulting cumulative translation adjustment was carried on the balance sheet and was recorded in stockholders’ equity. Following the liquidation and dissolution of International, the cumulative translation adjustment carried on the balance sheet was released into net income under other income (expense), and the financial statements will no longer need translation each period. Since no income tax benefit was received from liquidation and dissolution, the cumulative translation adjustment was not tax adjusted.
Lessor, Leases [Policy Text Block]	Lessor Accounting and Sales-Type Leases Modular buildings held for short term lease by the modular buildings segment are recorded at cost. Amortization of each modular building is calculated over the useful life of the building. Estimated useful life is three to five years. Lease revenue is accounted for on a straight-line basis over the term of the related lease agreement. Lease income for modular buildings is included in sales on the consolidated statements of operations. The Company accounts for leases of modular buildings to certain customers as sales-type leases. These leases have terms of up to 36 months and are collateralized by a security interest in the related modular building. The lessee has a bargain purchase option available at the end of the lease term. A minimum lease receivable is recorded net of unearned interest income and profit on sale at the time the Company’s obligation to the lessee is complete. Profit related to the sale of the building is recorded upon fulfillment of the Company’s obligation to the lessee.
Use of Estimates, Policy [Policy Text Block]	Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities and the reported amounts of revenue and expenses during the three and nine months ended August 31, 2019. Actual results could differ from those estimates.
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition Effective December 1, 2018 the Company adopted the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Subtopic 606, Revenue from Contracts with Customers (“ASC 606” ). The Company used the modified retrospective adoption of ASC 606. The adoption of ASC 606 had no impact on prior year or previously disclosed amounts. In accordance with ASC 606, revenue is measured based on consideration specified in a contract with a customer and recognized when the Company satisfies the performance obligation specified in each contract. The Company’s revenues primarily result from contracts with customers. The major sources of revenue for the agricultural products and tools segments are farm equipment, service parts related to farm equipment and steel cutting tools and inserts. The agricultural products and tools segments generally execute short-term contracts that contain a single performance obligation – the delivery of product to the common carrier. The Company recognizes revenue for the production and sale of farm equipment, service parts and cutting tools upon shipment of the good(s). The agricultural products and tools segments each typically require payment in full 30 days after the ship date. To take advantage of program discounts, some customers pay deposits up front. Any deposits received increase contract liabilities. The modular buildings segment executes contracts with customers that can be short- or long-term in nature. These contracts can have multiple performance obligations and revenue from these can be recognized over time or at a point in time depending on the nature of the contracts. Payment terms for the modular buildings segment vary by contract, but typically utilize money down and progress payments throughout the life of the contract. The payment terms of the modular buildings segment have the most impact on the Company’s contract receivables, contract assets and contract liabilities. Project invoicing from the modular buildings segment increases contract receivables and has an effect on contract liabilities through billings in excess of costs and estimated gross profit and advanced payments. The balance of contract assets is typically made up of the balance of costs in and estimated gross profit in excess of billings. The major source of revenue for the modular buildings segment is modular building sales. Sales of modular buildings are generally recognized using input methods to measure progress towards the satisfaction of a performance obligation using the percentage of completion method. Stock modular building sales also occur and are recognized at a point in time when the performance obligation is fulfilled through substantial completion. Substantial completion is achieved through customer acceptance of the completed building. The agricultural products segment offers variable consideration in the form of discounts depending on participation in yearly early order programs. This variable consideration is allocated to the transaction price of all products in a sales arrangement and is not contingent on future outcomes. The agricultural products segment does not offer rebates or credits. The tools segment offers quantity discounts that are allocated to the transaction price of each product once the quantity break is achieved. The tools segment does not offer rebates or credits. The modular buildings segment does not offer discounts, rebates or credits. For information on product warranty as it applies to ASC 606, refer to Note 9 “Product Warranty.”