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ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS (Tables) | 6 Months Ended
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Jun. 30, 2025
ACCOUNTS RECEIVABLE AND SIGNIFICANT CLIENTS [Abstract] |
Schedule of Change in Allowance for Doubtful Accounts | Activity in the Company’s Allowance for credit losses consists of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30, |
​ |  | 2025 |  | 2024 |  | 2025 |  | 2024 |
Balance, beginning of period | ​ | $ | 4,770 | ​ | $ | 2,065 | ​ | $ | 5,244 | ​ | $ | 2,248 | ​
Provision for credit losses | ​ |  | 347 | ​ |  | 2,675 | ​ |  | 598 | ​ | ​ | 2,644 | ​
Uncollectible receivables written-off | ​ |  | (117) | ​ |  | (6) | ​ |  | (842) | ​ | ​ | (156) | ​
Effect of foreign currency | ​ | ​ | — | ​ | ​ | 23 | ​ | ​ | — | ​ | ​ | 21 | ​
Balance, end of period | ​ | $ | 5,000 | ​ | $ | 4,757 | ​ | $ | 5,000 | ​ | $ | 4,757 | ​

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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