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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Significant Accounting Policies [Line Items] |  |
General payment terms upon completion of performance obligation | 30 days |
Cash and cash equivalents | $ 145,524 | $ 217,482
Software |  |
Significant Accounting Policies [Line Items] |  |
Estimated useful life (in years) | 3 years |
Held outside the United States |  |
Significant Accounting Policies [Line Items] |  |
Cash and cash equivalents | $ 142,800 | $ 204,700
Maximum |  |
Significant Accounting Policies [Line Items] |  |
Typical contract term | 1 year |
Transportation services |  |
Significant Accounting Policies [Line Items] |  |
General payment terms upon completion of performance obligation | 30 days |
Value-added logistics services |  |
Significant Accounting Policies [Line Items] |  |
General payment terms upon completion of performance obligation | 30 days |
Sourcing services | Minimum |  |
Significant Accounting Policies [Line Items] |  |
General payment terms upon completion of performance obligation | 20 days |
Sourcing services | Maximum |  |
Significant Accounting Policies [Line Items] |  |
General payment terms upon completion of performance obligation | 30 days |
Logistics and transportation |  |
Significant Accounting Policies [Line Items] |  |
General payment terms upon completion of performance obligation | 30 days |
Logistics and transportation | Maximum |  |
Significant Accounting Policies [Line Items] |  |
Typical contract term | 1 year |
Stock awards | Minimum |  |
Significant Accounting Policies [Line Items] |  |
Stock award vesting period (in years) | 3 years |
Stock awards | Maximum |  |
Significant Accounting Policies [Line Items] |  |
Stock award vesting period (in years) | 5 years |
Restricted shares and restricted stock units | Minimum |  |
Significant Accounting Policies [Line Items] |  |
Shares and restricted units grants, discount for post-vesting holding restrictions (percent) | 11.00% |
Restricted shares and restricted stock units | Maximum |  |
Significant Accounting Policies [Line Items] |  |
Shares and restricted units grants, discount for post-vesting holding restrictions (percent) | 24.00% |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
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