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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Schedule of inventories, net of reserves |
|  | 2017 |  |  | 2016 |
Chassis |  | $ | 7,525 |  |  | $ | 8,524 |
Raw materials |  |  | 30,109 |  |  |  | 26,322 |
Work in process |  |  | 13,521 |  |  |  | 11,620 |
Finished goods |  |  | 17,412 |  |  |  | 17,670 |
|  | $ | 68,567 |  |  | $ | 64,136 |
Schedule of property, plant and equipment |
|  | 2017 |  |  | 2016 |
Land and improvements |  | $ | 11,333 |  |  | $ | 10,027 |
Buildings and improvements |  |  | 66,826 |  |  |  | 57,697 |
Machinery and equipment |  |  | 44,161 |  |  |  | 34,984 |
Furniture and fixtures |  |  | 10,227 |  |  |  | 9,243 |
Software costs |  |  | 10,345 |  |  |  | 10,281 |
|  |  | 142,892 |  |  |  | 122,232 |
Less accumulated depreciation |  |  | (65,264 | ) |  |  | (62,619 | )
|  | $ | 77,628 |  |  | $ | 59,613 |
Schedule of accrued liabilities |
|  | 2017 |  |  | 2016 |
Accrued wages, commissions, bonuses and benefits |  | $ | 8,632 |  |  | $ | 7,452 |
Accrued products warranty |  |  | 3,147 |  |  |  | 2,821 |
Accrued taxes |  |  | 828 |  |  |  | 2,887 |
Other |  |  | 9,394 |  |  |  | 7,567 |
|  | $ | 22,001 |  |  | $ | 20,727 |
Schedule of product warranty liability |
|  | 2017 |  |  | 2016 |
Accrual at beginning of the year |  | $ | 2,821 |  |  | $ | 3,140 |
Provision |  |  | 2,618 |  |  |  | 1,750 |
Settlement and Other |  |  | (2,292 | ) |  |  | (2,069 | )
Accrual at end of year |  | $ | 3,147 |  |  | $ | 2,821 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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