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Fair value of financial instruments (Tables)
3 Months Ended
Mar. 31, 2023
Fair Value Disclosures [Abstract]  
Assets, Liabilities and Temporary Equity Measured at Fair Value on a Recurring Basis
The following table summarizes the Company’s assets, liabilities and temporary equities measured at fair value on a recurring basis as of March 31, 2023: 
TotalQuoted prices in
active markets
for identical assets
(Level 1)
Significant other
observable inputs
(Level 2)
Significant
unobservable
inputs
(Level 3)
Assets    
Investments in equity securities$36,144 $36,144 $— $— 
Interest rate cap agreements$112,687 $— $112,687 $— 
Liabilities   
Contingent earn-out obligations$25,098 $— $— $25,098 
Temporary equity    
Noncontrolling interests subject to put provisions$1,398,829 $— $— $1,398,829 
For a reconciliation of changes in noncontrolling interests subject to put provisions during the three months ended March 31, 2023, see the consolidated statement of equity.