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Fair Value Measurements
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
In accordance with accounting principles generally accepted in the United States, fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-level hierarchy prioritizes the inputs used to measure fair value as follows:

Level 1 - Observable inputs - quoted prices in active markets for identical assets and liabilities;
Level 2 - Observable inputs other than the quoted prices in active markets for identical assets and liabilities includes quoted prices for similar instruments, quoted prices for identical or similar instruments in inactive markets, and amounts derived from valuation models where all significant inputs are observable in active markets; and
Level 3 - Unobservable inputs - includes amounts derived from valuation models where one or more significant inputs are unobservable and require the Company to develop relevant assumptions.
The following is a summary of assets, liabilities and redeemable noncontrolling interests and their related classifications under the fair value hierarchy:
December 31, 2020
Total(Level 1)(Level 2)(Level 3)
Assets
Cash, cash equivalents and restricted cash (1)
$33,671 $33,671 $— $— 
Marketable securities-short term (2)
— — — — 
Marketable securities-long term (2)
— — — — 
Total assets$33,671 $33,671 $— $— 
Liabilities
Total liabilities$— $— $— $— 
Temporary equity
Redeemable noncontrolling interests (3)
$12,500 $— $— $12,500 
Total temporary equity$12,500 $— $— $12,500 
December 31, 2019
Total(Level 1)(Level 2)(Level 3)
Assets
Cash, cash equivalents and restricted cash (1)
$39,001 $39,001 $— $— 
Marketable securities-short term (2)
11 — 11 — 
Marketable securities-long term (2)
— — — — 
Total assets$39,012 $39,001 $11 $— 
Liabilities
Total liabilities$— $— $— $— 
Temporary Equity
Redeemable noncontrolling interests (3)
$12,500 $— $— $12,500 
Total temporary equity$12,500 $— $— $12,500 
________________________________
(1)Cash equivalents primarily included money market funds.
(2)Marketable securities are comprised of municipal bonds, certificates of deposit, corporate bonds, treasury bonds, and mutual funds.
(3)Put arrangements held by the noncontrolling interests in certain of the Company’s joint ventures.
Marketable Securities

The Company utilizes the market approach to measure fair value for its financial assets. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets. The Company’s marketable securities investments classified as Level 2 primarily utilize broker quotes in a non-active market for valuation of these securities. No transfers of assets between Level 1, Level 2 and Level 3 of the fair value measurement hierarchy occurred during the year ended December 31, 2020.

For marketable debt securities, unrealized gains and losses are reported as a component of accumulated other comprehensive income in stockholders’ equity. The cost of securities sold is based on the specific identification method. The Company evaluates investments with unrealized losses to determine if the losses are other than temporary. There were no unrealized losses as of December 31, 2020 and the Company has determined that the gross unrealized losses were temporary as of December 31, 2019. In making this determination, the Company considered the financial condition, credit ratings and near-term prospects of the issuers, the underlying collateral of the investments, and the magnitude of the losses as compared to the cost and the length of time the investments have been in an unrealized loss position.

The marketable equity securities are mutual funds measured at fair value and classified within Level 2 in the fair value hierarchy. Unrealized gains and losses related to the Company’s marketable equity securities were recognized in other income (expense), net.

The estimated fair value of investments in marketable debt securities were immaterial at December 31, 2020 and 2019, respectively.

At December 31, 2020 and December 31, 2019, the aggregate related fair value of investment with unrealized losses was approximately nil and nil respectively.

At December 31, 2020, the estimated fair value of investments in marketable equity securities, were as follows:
Balance at December 31, 2019$11 
Mutual funds purchases— 
Mutual funds sales(11)
Realized gains (losses)— 
Balance at December 31, 2020$— 

Redeemable Noncontrolling Interests

The redeemable noncontrolling interests recorded at fair value are put arrangements held by the noncontrolling interests in certain of the Company’s joint ventures. The Company recognizes changes in the redemption value immediately as they occur and adjusts the carrying value of the noncontrolling interest to the greater of the estimated redemption value, which approximates fair value, at the end of each reporting period or the initial carrying amount.

The fair value of the redeemable noncontrolling interests was estimated by applying an income approach using a discounted cash flow analysis. This fair value measurement is based on significant inputs that are not observable in the market and thus represents a Level 3 measurement. Significant changes in the underlying assumptions used to value the redeemable noncontrolling interests could significantly increase or decrease the fair value estimates recorded in the Consolidated Balance Sheets.

The changes in fair value of the Company’s Level 3 redeemable noncontrolling interests during the year ended December 31, 2020 were as follows:
Balance at December 31, 2019$12,500 
Fair value adjustment(344)
Net income attributable to redeemable noncontrolling interests344 
Balance at December 31, 2020$12,500