EMPLOYEE BENEFIT PLANS (Details) - USD ($)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Employee benefit plan disclosures              
Qualification age of employees for participation in the savings plan (in years)     21 years        
Minimum service in first twelve months of employment for eligibility (in hours)     PT1000H        
Targeted payment to associates       $ 4,300,000      
Negative prior service cost recorded due to revision of plan $ 15,197,000            
Amortization period over which prior service cost will be amortized 9 years            
Components of net periodic benefit (credit):              
Net periodic benefit (credit)     $ 730,000 (18,208,000) $ (3,418,000)    
Changes in other comprehensive loss              
Net periodic benefit cost (credit)     730,000 (18,208,000) (3,418,000)    
Amounts recognized in the Balance Sheet:              
Accrued expenses and other liabilities           $ (152,000) $ (152,000)
Other long-term liabilities           (44,456,000) (42,196,000)
Pension Benefits              
Components of net periodic benefit (credit):              
Interest cost     4,324,000 4,277,000 4,609,000    
Expected return on plan assets     (3,555,000) (4,666,000) (5,230,000)    
Amortization of net (gain) loss     27,000 45,000 (1,034,000)    
Settlement (gain) loss     5,000 (254,000)      
Net periodic benefit (credit)     791,000 (90,000) (1,655,000)    
Changes in other comprehensive loss              
Net (gain) loss     598,000 (345,000) 21,641,000    
Amortization of net gain     (27,000) (45,000) 1,034,000    
Settlement     5,000 (254,000)      
Allocated tax expense (benefit)       251,000 (8,843,000)    
Total recognized in other comprehensive (income) loss     576,000 (393,000) 13,832,000    
Net periodic benefit cost (credit)     791,000 (90,000) (1,655,000)    
Total recognized in net periodic benefit cost (credit) and other comprehensive (income) loss     1,367,000 (483,000) 12,177,000    
Change in benefit obligation:              
Benefit obligation at beginning of period   $ 108,850,000 106,969,000 113,955,000      
Interest cost     4,324,000 4,277,000 4,609,000    
Actuarial (gain) loss     2,049,000 (6,152,000)      
Benefits paid     (4,266,000) (4,665,000)      
Administrative expense     (157,000) (106,000)      
Settlement paid     (52,000) (296,000)      
Settlement gain     (17,000) (44,000)      
Benefit obligation at end of period     108,850,000 106,969,000 113,955,000    
Change in plan assets:              
Fair value of plan assets at beginning of period   65,354,000 64,621,000 70,424,000      
Actual return on plan assets (loss) gain     4,990,000 (1,184,000)      
Employer contribution     218,000 448,000      
Benefits paid     (4,266,000) (4,665,000)      
Administrative expense     (157,000) (106,000)      
Settlement paid     (52,000) (296,000)      
Fair value of plan assets at end of period     65,354,000 64,621,000 70,424,000    
Funded status           (43,496,000) (42,348,000)
Amounts recognized in the Balance Sheet:              
Accrued expenses and other liabilities           (152,000) (152,000)
Other long-term liabilities           (43,344,000) (42,196,000)
Net asset (liability) recognized           (43,496,000) (42,348,000)
Aggregate accumulated benefit obligation   (108,850,000) $ (106,969,000) $ (113,955,000) $ (113,955,000) (108,850,000) (106,969,000)
Pension plans with accumulated benefit obligations and projected benefit obligations in excess of plan assets              
Aggregated accumulated benefit obligation           (108,850,000) (106,969,000)
Aggregated projected benefit obligation           (108,850,000) (106,969,000)
Aggregated fair value of plan assets           65,354,000 64,621,000
Amounts recognized in accumulated other comprehensive income              
Net actuarial (gain) loss           $ 598,000 $ (345,000)
Weighted-average assumptions used to determine benefit obligations              
Discount rate (as a percent)           3.92% 4.10%
Weighted-average assumptions used to determine net periodic benefit cost              
Discount rate (as a percent)     3.92% 3.80% 4.73%    
Weighted average expected long-term return on plan assets (as a percent)     7.06% 7.81% 7.81%    
Pension Benefits | Forecast              
Employee benefit plan disclosures              
Company's expected pension contributions   2,995          
Amounts in accumulated other comprehensive income expected to be recognized in components of net periodic pension cost              
Net actuarial (gain) loss   36,000          
Other Benefits              
Components of net periodic benefit (credit):              
Service cost       $ 2,000 $ 36,000    
Interest cost     $ 218,000 7,000 214,000    
Expected return on plan assets     (283,000)        
Amortization of net (gain) loss     4,000 (2,797,000) (348,000)    
Amortization of prior service credit       (2,888,000) (1,665,000)    
Curtailment gain       (11,867,000)      
Settlement (gain) loss       (575,000)      
Net periodic benefit (credit)     (61,000) (18,118,000) (1,763,000)    
Changes in other comprehensive loss              
Net (gain) loss     (71,000) 73,000 561,000    
Prior service credit       (1,223,000)      
Amortization of net gain       2,797,000 348,000    
Amortization of prior service credit       2,888,000 1,665,000    
Curtailment       11,867,000      
Settlement       575,000      
Allocated tax expense (benefit)       (6,620,000) (1,003,000)    
Total recognized in other comprehensive (income) loss     (71,000) 10,357,000 1,571,000    
Net periodic benefit cost (credit)     (61,000) (18,118,000) (1,763,000)    
Total recognized in net periodic benefit cost (credit) and other comprehensive (income) loss     (132,000) (7,761,000) (192,000)    
Change in benefit obligation:              
Benefit obligation at beginning of period   93,314,000   5,686,000      
Acquisition     90,936,000        
Service cost       2,000 36,000    
Interest cost     218,000 7,000 214,000    
Plan participant's contributions       101,000      
Actuarial (gain) loss     3,453,000 73,000      
Plan amendment       (1,223,000)      
Benefits paid     (220,000) (357,000)      
Settlement paid       (4,289,000)      
Currency translation adjustment     (1,073,000)        
Benefit obligation at end of period     93,314,000   5,686,000    
Change in plan assets:              
Fair value of plan assets at beginning of period   111,071,000          
Acquisition     108,938,000        
Actual return on plan assets (loss) gain     3,806,000        
Employer contribution       4,545,000      
Plan participant's contributions       101,000      
Benefits paid     (220,000) (357,000)      
Currency translation adjustment     (1,453,000) (4,289,000)      
Fair value of plan assets at end of period     111,071,000        
Funded status           $ 17,757,000  
Amounts recognized in the Balance Sheet:              
Other long-term assets           18,869,000  
Other long-term liabilities           (1,112,000)  
Net asset (liability) recognized           17,757,000  
Aggregate accumulated benefit obligation   (93,314,000) $ (93,314,000) (5,686,000) $ (5,686,000) (93,314,000)  
Pension plans with accumulated benefit obligations and projected benefit obligations in excess of plan assets              
Aggregated accumulated benefit obligation           (93,314,000)  
Aggregated projected benefit obligation           (93,314,000)  
Aggregated fair value of plan assets           111,071,000  
Amounts recognized in accumulated other comprehensive income              
Net actuarial (gain) loss           $ (71,000) $ 73,000
Amounts in accumulated other comprehensive income expected to be recognized in components of net periodic pension cost              
Net prior service credit       $ (1,223,000)      
Weighted-average assumptions used to determine benefit obligations              
Discount rate (as a percent)           2.70%  
Weighted-average assumptions used to determine net periodic benefit cost              
Discount rate (as a percent)     2.90% 3.37% 4.00%    
Weighted average expected long-term return on plan assets (as a percent)     3.09%        
Rate of compensation increase (as a percent)     3.20%        
Other Benefits | Forecast              
Employee benefit plan disclosures              
Company's expected pension contributions   1,239          
Amounts recognized in accumulated other comprehensive income              
Net actuarial (gain) loss   $ 75,000