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Revenue | 12 Months Ended
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Dec. 31, 2019
Revenue |
Revenue | NOTE 10 – REVENUE ​ The table below identifies the Company’s revenues disaggregated by major customer type for the years ended December 31, 2019, 2018 and 2017 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended
​ | ​ | December 31,
​ |  | 2019 |  | 2018 |  | 2017
Sales to do-it-yourself customers | ​ | $ | 5,612,390 | ​ | $ | 5,351,035 | ​ | $ | 5,113,288
Sales to professional service provider customers |  | ​ | 4,369,541 |  | ​ | 4,035,898 |  | ​ | 3,724,220
Other sales and sales adjustments |  | ​ | 168,054 |  | ​ | 149,495 |  | ​ | 140,218
Total sales | ​ | $ | 10,149,985 | ​ | $ | 9,536,428 | ​ | $ | 8,977,726
​ As of December 31, 2019 and 2018, the Company had recorded a deferred revenue liability of $4.1 million and $4.3 million, respectively, related to its loyalty program, which were included in “Other liabilities” on the accompanying Consolidated Balance Sheets. During the years ended December 31, 2019, 2018 and 2017, the Company recognized $15.6 million, $15.9 million and $17.6 million, respectively, of revenue related to its loyalty program, which were included in “Sales” on the accompanying Consolidated Statements of Income. ​

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 + Details
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