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ACQUISITIONS - ACQUISITIONS (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
branches
Mar. 31, 2018
USD ($)
Business Acquisition [Line Items]    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets $ 34,812  
Business Acquisition, Effective Date of Acquisition Mar. 05, 2019  
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period $ 100,000  
Goodwill, Acquired During Period $ 5,526  
Number of Stores | branches 500  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities $ 7,070  
Payments to Acquire Businesses, Gross $ 27,742 $ 0