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Investments and Fair Value Measurements
3 Months Ended
Mar. 31, 2022
Fair Value Disclosures [Abstract]  
Investments and Fair Value Measurements INVESTMENTS AND FAIR VALUE MEASUREMENTS
The Company’s financial assets and liabilities subject to fair value measurements were as follows:
Fair Value Measurements as of March 31, 2022
TotalQuoted Prices in Active Markets for Identical Assets
(Level 1)

Significant Other Observable Inputs
(Level 2)


Significant Unobservable Inputs
(Level 3)
Assets:
Money market funds (1)
$153,948 $153,948 $— $— 
Commercial paper (1)
43,002 — 43,002 — 
Certificates of deposit (2)
110 — 110 — 
Investment securities at fair value
   Equity securities at fair value
   Marketable equity securities
18,962 18,962 — — 
   Mutual funds invested in debt securities
22,538 22,538 — — 
         Total equity securities at fair value
41,500 41,500 — — 
    Debt securities available for sale
U.S. government securities
5,585 — 5,585 — 
Corporate securities
55,324 — 55,324 — 
U.S. government and federal agency
19,173 — 19,173 — 
Commercial paper
10,540 — 10,540 — 
Foreign fixed-income securities
1,216 — 1,216 — 
Total debt securities available for sale
91,838 — 91,838 — 
Total investment securities at fair value
133,338 41,500 91,838 — 
Long-term investments
Long-term investment securities at fair value (3)
31,057 — — — 
Total$361,455 $195,448 $134,950 $— 
Liabilities:
Fair value of contingent liability$965 $— $— $965 
Total$965 $— $— $965 
(1)     Amounts included in Cash and cash equivalents on the condensed consolidated balance sheets.
(2)    Amounts included in current restricted assets and non-current restricted assets on the condensed consolidated balance sheets.
(3)    In accordance with Subtopic 820-10, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.
Fair Value Measurements as of December 31, 2021
TotalQuoted Prices in Active Markets for Identical Assets
(Level 1)

Significant Other Observable Inputs
(Level 2)


Significant Unobservable Inputs
(Level 3)
Assets:
Money market funds (1)
$130,583 $130,583 $— $— 
Commercial paper (1)
24,426 24,426 — 
Certificates of deposit (2)
110 110 — 
Investment securities at fair value
   Equity securities at fair value
   Marketable equity securities
19,560 19,560 — — 
   Mutual funds invested in debt securities
23,221 23,221 — — 
         Total equity securities at fair value
42,781 42,781 — — 
    Debt securities available for sale
U.S. government securities
6,481 — 6,481 — 
Corporate securities
47,531 — 47,531 — 
U.S. government and federal agency
19,572 — 19,572 — 
Commercial paper
29,103 — 29,103 — 
Foreign fixed-income securities
1,219 — 1,219 — 
Total debt securities available for sale
103,906 — 103,906 — 
Total investment securities at fair value
146,687 42,781 103,906 — 
Long-term investments
Long-term investment securities at fair value (3)
32,089 — — — 
Total$333,895 $173,364 $128,442 $— 
Liabilities:
Fair value of contingent liability$2,646 $— $— $2,646 
Total$2,646 $— $— $2,646 
(1)     Amounts included in Cash and cash equivalents on the condensed consolidated balance sheets.
(2)    Amounts included in current restricted assets and non-current restricted assets on the condensed consolidated balance sheets.
(3)    In accordance with Subtopic 820-10, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.

The fair value of the Level 2 certificates of deposit is based on the discounted value of contractual cash flows. The discount rate is the rate offered by the financial institution. The fair value of investment securities at fair value included in Level 1 is based on quoted market prices from various stock exchanges. The Level 2 investment securities at fair value are based on quoted market prices of securities that are thinly traded, quoted prices for identical or similar assets in markets that are not active or inputs other than quoted prices such as interest rates and yield curves.
The long-term investments are based on NAV per share provided by the partnerships based on the indicated market value of the underlying assets or investment portfolio. In accordance with Subtopic 820-10, these investments are not classified under the fair value hierarchy disclosed above because they are measured at fair value using the NAV practical expedient.
The only Level 3 asset or liability is the guarantee of a contingent liability related to Douglas Elliman. The Company calculates the fair value of the liability using a Monte Carlo simulation model. The unobservable inputs related to the valuation are the estimated fair value of the underlying asset, the risk-free rate for the remaining term of the liability and the leverage-adjusted equity volatility of peer firms. These values were $593,203, 1.06%, 29.58% at March 31, 2022 and $776,351, 0.39%, 26.13% at December 31, 2021.
In addition to assets and liabilities that are recorded at fair value on a recurring basis, the Company is required to record assets and liabilities at fair value on a nonrecurring basis. Generally, assets and liabilities are recorded at fair value on a nonrecurring basis as a result of impairment charges. The Company had no nonrecurring nonfinancial assets subject to fair value measurements as of March 31, 2022 and December 31, 2021, respectively, except for investments in real estate ventures that were impaired as of December 31, 2021.

The Company’s investments in real estate ventures subject to nonrecurring fair value measurements are as follows:
Fair Value Measurement Using:
Year Ended December 31,
2021
Quoted Prices in Active Markets for Identical Assets
(Level 1)

Significant Other Observable Inputs
(Level 2)


Significant Unobservable Inputs
(Level 3)
Impairment ChargeTotal
Assets:
Investments in real estate ventures
$2,713 $— $— $— $— 
The Company estimated the fair value of its investments in real estate ventures using observable inputs such as market pricing based on recent events, however, significant judgment was required to select certain inputs from observed market data. The decline in the investments in real estate ventures was attributed to the decline in the projected sales prices and the duration of the estimated sell out of the respective real estate ventures. The $2,713 of impairment charges were included in equity in losses from real estate ventures for the year ended December 31, 2021.