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INCOME TAXES (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Components of income before income taxes [Abstract]          
Domestic   $ 11,079 $ (42,179) $ (21,349)  
Foreign   (1,405) 3,259 (4,207)  
Income (loss) before income taxes   9,674 (38,920) (25,556)  
Current [Abstract]          
Federal   (902) 5,182 24,050  
State   136 1,499 5,604  
Foreign   602 2,493 2,150  
Total current   (164) 9,174 31,804  
Deferred [Abstract]          
Federal   4,174 (7,090) (10,544)  
State   120 0 (1,769)  
Foreign   (1,607) (1,934) 191  
Total Deferred   2,687 (9,024) (12,122)  
Total   $ 2,523 150 19,682  
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   $ 3,386 (13,622) (8,945)  
State income taxes, net of federal benefit   166 974 2,492  
Non-tax deductible impairment expense computed at federal statutory rate   0 15,765 24,444  
Foreign adjustment   140 689 1,353  
Meals and entertainment   361 620 801  
Gain on sale of Vertex   (1,971) 0 0  
Domestic Production Activity Deduction   0 (1,143) (1,040)  
Research and development tax credit   (886) (1,730) (587)  
Foreign tax credit   (383) (921) (343)  
Provision to return adjustments   927 0 0  
Other   783 (482) 1,507  
Total   2,523 150 19,682  
The net current and noncurrent components of deferred income tax balances [Abstract]          
Net current assets $ 9,473 9,473 8,996    
Net non-current liabilities (18,986) (18,986) (6,312)    
Total deferred tax assets     2,684    
Net liabilities (9,513) (9,513)      
Deferred tax assets [Abstract]          
Goodwill 4,029 4,029 9,136    
Allowance for doubtful accounts 2,469 2,469 2,692    
Inventories 3,944 3,944 3,312    
Accruals 1,978 1,978 2,354    
Research and development credit carryforward 886 886 0    
Net operating loss carryforward 760 760 730    
Cumulative translation adjustment 0 0 8,605    
Capital loss carryforward 18,903 18,903 0    
Other 309 309 730    
Total deferred tax assets 33,278 33,278 27,559    
Less valuation allowance (19,633) (19,633) (730)    
Total deferred tax asset, net of valuation Deferred tax liabilities 13,645 13,645 26,829    
Intangibles (10,042) (10,042) (13,314)    
Property and equipment (12,762) (12,762) (10,824)    
Unremitted foreign earnings (354) (354) (259)    
Other 0 0 252    
Total deferred tax assets     2,684    
Net liabilities $ (9,513) $ (9,513)      
Operating Loss Carryforwards [Line Items]          
Percentage of valuation allowance to carryforward amounts 100.00% 100.00%      
Reduction in deferred tax assets $ 8,600        
Capital Loss Carryforward [Member]          
Tax Credit Carryforward [Line Items]          
Capital loss carryforward 49,900 $ 49,900      
Restatement Adjustment [Member]          
Error Corrections and Prior Period Adjustments Restatement [Line Items]          
Error corrections for deferred tax assets 8,600   $ 4,600 $ 2,700 $ 1,300
Foreign Tax Authority [Member]          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforward $ 2,700 $ 2,700