SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Geographic information of Revenue by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenues	$ 322,606	$ 310,867	$ 594,512	$ 561,944
Reportable segment
Disaggregation of Revenue [Line Items]
Revenues	$ 322,606	$ 310,867	$ 594,512	$ 561,944
No region \| Minimum \| Revenue benchmark \| Customer concentration risk
Disaggregation of Revenue [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
Service revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 96,924	$ 95,787	$ 190,992	$ 172,410
Revenues	96,924	95,787	190,992	172,410
Service revenues \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	96,924	95,787	190,992	172,410
Platform commission
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,806	4,479	9,141	8,077
Platform commission \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,806	4,479	9,141	8,077
Platform commission \| Hong Kong \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,806	4,479	9,141	8,077
Ocean transportation service
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,312	15,504	19,670	25,305
Ocean transportation service \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,312	15,504	19,670	25,305
Ocean transportation service \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,099	15,436	18,896	25,177
Ocean transportation service \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	213	68	774	128
Drayage service
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,242	3,617	6,014	7,167
Drayage service \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,242	3,617	6,014	7,167
Drayage service \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	3,180	3,609	5,891	7,152
Drayage service \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	62	8	123	15
Warehousing service
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	13,480	9,589	27,558	18,916
Warehousing service \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	13,480	9,589	27,558	18,916
Warehousing service \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	12,966	9,326	26,626	18,416
Warehousing service \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	514	263	932	500
Last-mile delivery service
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	53,949	51,959	103,193	91,922
Last-mile delivery service \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	53,949	51,959	103,193	91,922
Last-mile delivery service \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	45,607	48,149	88,115	85,526
Last-mile delivery service \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,290	724	2,239	1,300
Last-mile delivery service \| Germany \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	7,052	3,086	12,839	5,096
Packaging service
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,267	7,686	15,517	13,965
Packaging service \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,267	7,686	15,517	13,965
Packaging service \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,171	6,921	15,349	12,674
Packaging service \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	96	765	168	1,291
Others
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,868	2,953	9,899	7,058
Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,868	2,953	9,899	7,058
Others \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	4,588	2,376	8,792	6,401
Others \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	280	577	1,107	657
Product revenues
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	225,682	215,080	403,520	389,534
Revenues	225,682	215,080	403,520	389,534
Product revenues \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	225,682	215,080	403,520	389,534
Product revenues \| United States \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	141,452	159,007	251,046	290,440
Product revenues \| Others \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	8,705	5,751	14,619	9,878
Product revenues \| Germany \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	62,703	40,092	114,254	69,365
Product revenues \| Japan \| Reportable segment
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 12,822	$ 10,230	$ 23,601	$ 19,851