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SIGNIFICANT ACCOUNTING POLICIES (Detail Textuals 4) | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) Supplier Engine | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Significant Accounting Policies [Line Items] |  |  |
Goodwill | $ 3,308,000 | $ 3,308,000 |
Research and development costs | $ 822,000 | $ 960,000 | $ 858,000
Statutory federal income tax rate | 21.00% | 35.00% | 35.00%
Number of supplier | Supplier | 4 |  |
Number of types of engines | Engine | 3 |  |
Methods of depreciation | straight-line basis |  |
Earliest tax year |  |  |
Significant Accounting Policies [Line Items] |  |  |
Statutory federal income tax rate | 35.00% |  |
Latest tax year |  |  |
Significant Accounting Policies [Line Items] |  |  |
Statutory federal income tax rate | 21.00% |  |
Accounts Receivable |  |  |
Significant Accounting Policies [Line Items] |  |  |
Percentage of domestic shipments made pursuant to floor plan financing | 68.00% |  |

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