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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule of Advertising Cost Expensed [Table Text Block] |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 1) |
Years ended December 31, |  | 2020 |  |  | 2019 |  |  | 2018 |
(in thousands) |  |  |  |  |  |  |  |  |
Advertising |  | $ | 86,314 |  |  | $ | 81,174 |  |  | $ | 69,875 |
Schedule Of Cash And Cash Equivalents Held In Foreign Bank Accounts [Table Text Block] |
Disclosure- Summary Of Significant Accounting Policies (Details 2) |
At December 31, |  | 2020 |  |  | 2019 |  |  | 2018 |
(in thousands) (in US dollars) |  |  |  |  |  |  |  |  |
Cash held in foreign bank accounts |  | $ | 71,330 |  |  | $ | 74,094 |  |  | $ | 53,613 |
Schedule Of Depreciation And Amortization Expense [Table Text Block] |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3 |
Years ended December 31, |  | 2020 |  |  | 2019 |  |  | 2018 |
(in thousands) |  |  |  |  |  |  |  |  |
Depreciation |  | $ | 40,623 |  |  | $ | 36,646 |  |  | $ | 30,364 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) |
Years Ended December 31, |  | 2020 |  |  | 2019 |  |  | 2018 |
Net income available to stockholders |  | $ | 260,824 |  |  | $ | 203,347 |  |  | $ | 231,663 |
Less dividends paid: |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  | (159,524 | ) |  |  | (152,793 | ) |  |  | (151,458 | )
Restricted shares of common stock |  |  | (963 | ) |  |  | (1,042 | ) |  |  | (1,284 | )
Undistributed earnings for the period |  | $ | 100,337 |  |  | $ | 49,512 |  |  | $ | 78,921 |
Allocation of undistributed earnings: |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  | 99,676 |  |  |  | 49,144 |  |  |  | 78,255 |
Restricted shares of common stock |  |  | 661 |  |  |  | 368 |  |  |  | 666 |
Basic and diluted shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |
Common stock |  |  | 488,365 |  |  |  | 487,569 |  |  |  | 486,794 |
Restricted shares of common stock |  |  | 3,240 |  |  |  | 3,647 |  |  |  | 4,143 |
|  |  | 491,605 |  |  |  | 491,216 |  |  |  | 490,937 |
Basic and diluted earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Common stock: |  |  |  |  |  |  |  |  |  |  |  |
Distributed earnings |  | $ | 0.33 |  |  | $ | 0.31 |  |  | $ | 0.31 |
Undistributed earnings |  |  | 0.20 |  |  |  | 0.10 |  |  | $ | 0.16 |
|  | $ | 0.53 |  |  | $ | 0.41 |  |  | $ | 0.47 |
Restricted shares of common stock: |  |  |  |  |  |  |  |  |  |  |  |
Distributed earnings |  | $ | 0.30 |  |  | $ | 0.29 |  |  | $ | 0.31 |
Undistributed earnings |  |  | 0.20 |  |  |  | 0.10 |  |  |  | 0.16 |
|  | $ | 0.50 |  |  | $ | 0.39 |  |  | $ | 0.47 |
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block] |
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) |
|  | Allowance for Expected Credit Losses |
|  | Trade Receivables |  |  | Financed Receivables |  |  | Total Receivables |
Balance at January 1, 2020 |  | $ | 16,699 |  |  | $ | 2,959 |  |  | $ | 19,658 |
Adoption of ASC 326 |  |  | (3,330 | ) |  |  | — |  |  |  | (3,330 | )
Adjusted balance at January 1, 2020 |  |  | 13,369 |  |  |  | 2,959 |  |  |  | 16,328 |
Provision for expected credit losses |  |  | 14,699 |  |  |  | 2,837 |  |  |  | 17,536 |
Write-offs charged against the allowance |  |  | (18,228 | ) |  |  | (2,565 | ) |  |  | (20,793 | )
Recoveries collected |  |  | 7,014 |  |  |  | — |  |  |  | 7,014 |
Balance at December 31, 2020 |  | $ | 16,854 |  |  | $ | 3,231 |  |  | $ | 20,085 |

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