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Valuation and Qualifying Accounts (Note) | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Valuation and Qualifying Accounts Trade accounts receivable balances and accounts receivable included within the settlement assets are stated net of allowance for doubtful accounts. Historically, the Company has not experienced significant write-offs. The Company records allowances for doubtful accounts when it is probable that the accounts receivable balance will not be collected. The following table provides a summary of the allowance for doubtful accounts balances and activity for the years ended December 31, 2019, 2018 and 2017:
|  | Year Ended December 31,
(in thousands) |  | 2019 |  | 2018 |  | 2017
Beginning balance-allowance for doubtful accounts |  | $ | 24,287 |  |  | $ | 20,958 |  |  | $ | 18,369 |
Additions-charged to expense |  | 10,095 |  |  | 8,653 |  |  | 6,631 |
Amounts written off |  | (6,179 | ) |  | (4,079 | ) |  | (5,944 | )
Other (primarily changes in foreign currency exchange rates) |  | (265 | ) |  | (1,245 | ) |  | 1,902 |
Ending balance-allowance for doubtful accounts |  | $ | 27,938 |  |  | $ | 24,287 |  |  | $ | 20,958 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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