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Schedule of fair value, assets measured on recurring basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |
Short-term investments | $ 150,833 | $ 160,014
Interest rate swaps | 6,758 |
Foreign currency forward exchange contracts accounted for using hedge accounting | 1,189 | 1,982
Total Assets | 158,780 |
Liabilities: |  |
Foreign currency forward exchange contracts not accounted for using hedge accounting | 68 |
Total liabilities | 68 | 1,811
Foreign currency forward exchange contracts not accounted for using hedge accounting |  | 63
Interest rate swaps |  | (234)
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Short-term investments | 19,861 |
Interest rate swaps |  |
Foreign currency forward exchange contracts accounted for using hedge accounting |  |
Total Assets | 19,861 |
Liabilities: |  |
Foreign currency forward exchange contracts not accounted for using hedge accounting |  |
Total liabilities |  |
Foreign currency forward exchange contracts not accounted for using hedge accounting |  |
Interest rate swaps |  |
Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Short-term investments | 130,174 | 160,014
Interest rate swaps | 6,758 |
Foreign currency forward exchange contracts accounted for using hedge accounting | 1,189 | 1,982
Total Assets | 138,122 |
Liabilities: |  |
Foreign currency forward exchange contracts not accounted for using hedge accounting | 68 |
Total liabilities | 68 | 1,811
Foreign currency forward exchange contracts not accounted for using hedge accounting |  | 63
Interest rate swaps |  | (234)
Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Short-term investments | 798 |
Interest rate swaps |  |
Foreign currency forward exchange contracts accounted for using hedge accounting |  |
Total Assets | 798 |
Liabilities: |  |
Foreign currency forward exchange contracts not accounted for using hedge accounting |  |
Total liabilities |  |
Foreign currency forward exchange contracts not accounted for using hedge accounting |  |
Interest rate swaps |  |

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- Definition Fair value as of the balance sheet date of all foreign currency derivative liabilities not designated as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959 + Details
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