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INCOME TAXES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Components of income before income taxes [Abstract] |  |  |  |  |  |  |  |
Domestic |  |  |  | $ 13,183 | $ 11,079 | $ (42,179) |  |
Foreign |  |  |  | 3,709 | (1,405) | 3,259 |  |
Income (loss) before income taxes |  |  |  | 16,892 | 9,674 | (38,920) |  |
Current [Abstract] |  |  |  |  |  |  |  |
Federal |  |  |  | 1,400 | (902) | 5,182 |  |
State |  |  |  | 698 | 136 | 1,499 |  |
Foreign |  |  |  | 2,092 | 602 | 2,493 |  |
Total current |  |  |  | 4,190 | (164) | 9,174 |  |
Deferred [Abstract] |  |  |  |  |  |  |  |
Federal |  |  |  | 686 | 4,174 | (7,090) |  |
State |  |  |  | (464) | 120 | 0 |  |
Foreign |  |  |  | (4,049) | (1,607) | (1,934) |  |
Total Deferred |  |  |  | (3,827) | 2,687 | (9,024) |  |
Total |  |  |  | $ 363 | 2,523 | 150 |  |
Federal statutory income tax rate |  |  |  | 35.00% |  |  |  |
The difference between income taxes computed at the federal statutory income tax rate and the provision for income taxes [Abstract] |  |  |  |  |  |  |  |
Income taxes computed at federal statutory rate |  |  |  | $ 5,912 | 3,386 | (13,622) |  |
State income taxes, net of federal benefit |  |  |  | 152 | 166 | 974 |  |
Non-tax deductible impairment expense computed at federal statutory rate |  |  |  | 0 | 0 | 15,765 |  |
Foreign adjustment |  |  |  | 255 | 140 | 689 |  |
Meals and entertainment |  |  |  | 422 | 361 | 620 |  |
Gain on sale of Vertex |  |  |  | 0 | (1,971) | 0 |  |
Domestic production activity deduction |  |  |  | (98) | 0 | (1,143) |  |
Research and development tax credit |  |  |  | (641) | (886) | (1,730) |  |
Foreign tax credit |  |  |  | 0 | (383) | (921) |  |
Valuation allowance |  |  |  | (791) | 0 | 0 |  |
Tax reform deferred tax remeasurement |  |  |  | (1,294) | 0 | 0 |  |
Canadian acquisition deferred tax liability true up | $ (2,180) |  |  | (2,180) | 0 | 0 |  |
Foreign rate difference |  |  |  | (297) | 112 | (261) |  |
Other |  |  |  | (1,077) | 1,598 | (221) |  |
Total |  |  |  | 363 | 2,523 | 150 |  |
Deferred tax assets [Abstract] |  |  |  |  |  |  |  |
Goodwill | 2,668 | $ 4,029 |  | 2,668 | 4,029 |  |  |
Allowance for doubtful accounts | 1,707 | 2,469 |  | 1,707 | 2,469 |  |  |
Inventories | 2,365 | 3,944 |  | 2,365 | 3,944 |  |  |
Accruals | (61) | 97 |  | (61) | 97 |  |  |
Research and development credit carryforward | 1,115 | 886 |  | 1,115 | 886 |  |  |
Foreign Tax Credit Carryforward | 64 | 64 |  | 64 | 64 |  |  |
Charitable Contribution Carryforward | 559 | 138 |  | 559 | 138 |  |  |
Net operating loss carryforward | 136 | 760 |  | 136 | 760 |  |  |
Capital loss carryforward | 12,225 | 18,903 |  | 12,225 | 18,903 |  |  |
Deferred Compensation | 475 | 1,881 |  | 475 | 1,881 |  |  |
Other Accruals | 266 | 0 |  | 266 | 0 |  |  |
Other | 65 | 107 |  | 65 | 107 |  |  |
Total deferred tax assets | 21,584 | 33,278 |  | 21,584 | 33,278 |  |  |
Less valuation allowance | (12,220) | (19,633) |  | (12,220) | (19,633) |  |  |
Total deferred tax asset, net of valuation Deferred tax liabilities | 9,364 | 13,645 |  | 9,364 | 13,645 |  |  |
Intangibles | (8,695) | (10,042) |  | (8,695) | (10,042) |  |  |
Property and equipment | (6,860) | (12,762) |  | (6,860) | (12,762) |  |  |
Unremitted foreign earnings | (354) | (354) |  | (354) | (354) |  |  |
Cumulative translation adjustment | (67) | 0 |  | (67) | 0 |  |  |
Other | (457) | 0 |  | (457) | 0 |  |  |
Net deferred tax liability | (7,069) | (9,513) |  | (7,069) | $ (9,513) |  |  |
Capital Loss Carryforward [Member] |  |  |  |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |  |  |  |
Capital loss carryforward | $ 51,400 |  |  | $ 51,400 |  |  |  |
Plan [Member] |  |  |  |  |  |  |  |
Deferred [Abstract] |  |  |  |  |  |  |  |
Federal statutory income tax rate |  |  | 21.00% |  |  |  |  |
Restatement Adjustment [Member] |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |
Comprehensive income - deferred tax assets change in amount |  | $ (8,600) |  |  |  | $ 4,600 | $ 2,700 | $ 1,300

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