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PREPAID EXPENSES AND OTHER ASSETS
 9 Months Ended
Sep. 30, 2023
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
PREPAID EXPENSES AND OTHER ASSETS PREPAID EXPENSES AND OTHER ASSETS
Prepaid expenses and other assets consist of the following:
September 30,
2023		December 31,
2022
Funds held in trust account for BRPM 250 to redeem noncontrolling interests in equity of subsidiaries$— $174,437 
Inventory107,226 101,675 
Equity method investments32,705 41,298 
Prepaid expenses19,762 17,623 
Unbilled receivables18,939 14,144 
Other receivables41,865 66,403 
Other assets45,034 45,116 
Prepaid expenses and other assets$265,531 $460,696 
Unbilled receivables represent the amount of contractual reimbursable costs and fees for services performed in connection with fee and service based contracts in the Auction and Liquidation segment, mobile handsets in the Communications segment, and consulting related engagements in the Financial Consulting segment.