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DEBT - Paycheck Protection Program Loan (Details) - USD ($) $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Apr. 16, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Current and long-term debt |  |  |
Proceeds from issuance of debt |  | $ 82,000 | $ 81,209
Paycheck Protection Program Loan |  |  |
Current and long-term debt |  |  |
Proceeds from issuance of debt | $ 2,200 |  |
Interest rate (as a percent) | 1.00% |  |
Maximum percentage allowed to be prepaid without written advance notice |  | 20.00% |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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