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Allowance for credit losses | 12 Months Ended
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Dec. 31, 2020
Allowance for credit losses |
Allowance for credit losses | Note 11 – Allowance for Credit Losses ​ As described in Note 2 – Summary of Significant Accounting Policies, the January 1, 2020 adoption of ASU 2016-13, Measurement of Credit Losses on Financial Instruments, amended our accounting policies for the allowance for credit losses. The change in the allowance for credit losses during the year ended December 31, 2020 were as follows: ​
​ | ​ | ​ | ​
in thousands | ​ | ​ | ​
Balance at December 31, 2019 | ​ | $ | 2,524
Impact of ASU 2016-13 adoption | ​ | ​ | 288
Balance at January 1, 2020 | ​ | ​ | 2,812
Provision | ​ | ​ | 2,306
Write-offs | ​ | ​ | (994)
Net foreign currency translation | ​ | ​ | 11
Balance at December 31, 2020 | ​ | $ | 4,135
​ A higher allowance for credit losses was recorded during the year ended December 31, 2020 primarily due to the adverse impact the COVID-19 pandemic has had on factors that affect our estimate of future credit losses.

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- Definition The entire disclosure for credit loss on financial instrument measured at amortized cost basis, net investment in lease, off-balance sheet credit exposure, and available-for-sale debt security. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922895-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919272-210447 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919236-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919269-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118955579&loc=SL82922888-210455 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919244-210447 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447 + Details
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