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Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Measurements, Recurring and Nonrecurring The following tables present our assets measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 classified by the input method used to measure fair value:
Level 1Level 2Level 3
March 31, 2021
Investments:
Money Market Funds$1,862 $— $— 
Mutual Funds5,141 — — 
Corporate Debt Securities— 2,401 — 
Government-Backed and Government-Sponsored Enterprises’ Debt Securities— 6,808 — 
Total Assets$7,003 $9,209 $— 
December 31, 2020
Investments:
Money Market Funds$4,075 $— $— 
Mutual Funds1,662 — — 
Corporate Debt Securities— 2,627 — 
Government-Backed and Government-Sponsored Enterprises’ Debt Securities— 6,633 — 
Total Assets$5,737 $9,260 $— 
Schedule of Fair Value of Assets and Liabilities The following reflects the carrying value and estimated fair value of these assets and (liabilities) as of March 31, 2021 and December 31, 2020:
 March 31, 2021December 31, 2020
(in thousands)Carrying
Amount
Fair ValueCarrying
Amount
Fair Value
Cash and Cash Equivalents$1,212 $1,212 $1,163 $1,163 
Short-Term Debt(134,851)(134,851)(80,997)(80,997)
Long-Term Debt(764,426)(839,942)(764,519)(858,455)