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Cash and Cash Equivalents
12 Months Ended
Dec. 31, 2021
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents
Note 3 — Cash and Cash Equivalents

The carrying values of the Company’s cash and cash equivalents are as follows:
As of December 31,
20212020
(in thousands)
Cash$57,008 $34,707 
Cash equivalents70,689 70,826 
Restricted cash - letters of credit6,927 7,170 
Total cash and cash equivalents$134,624 $112,703 
The Company's standby letter of credit of $5.9 million for its new headquarters' location may be periodically reduced under certain circumstances to approximately $3.5 million. See “Note 16 — Leases”.
The carrying value of the Company’s cash equivalents approximates fair value. See “Note 7 — Fair Value of Financial Instruments”.
Letters of credit are secured by cash held on deposit. See “Note 14 — Commitments and Contingencies”.