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SHORT-TERM INVESTMENTS

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

SHORT-TERM INVESTMENTS

SHORT-TERM INVESTMENTS

Short-term investments include marketable securities in the amount of $1,041,589 and $1,012,282 as of December 31, 2021 and 2020, respectively and short-term bank deposits in the amounts of $4,506 and $9,332 as of December 31, 2021 and 2020, respectively.

The following table summarizes amortized costs, gross unrealized gains and losses and estimated fair values of available-for-sale marketable securities as of December 31, 2021 and 2020:

			Amortized cost												Gross unrealized gains												Gross unrealized losses												Estimated fair value (Level 2 within the fair value hierarchy)
			December 31,												December 31,												December 31,												December 31,
			2021						2020						2021						2020						2021						2020						2021						2020
Corporate debentures			$	1,012,615					$	973,029					$	3,883					$	15,016					$	(5,560)					$	(343)					$	1,010,939					$	987,702
U.S. Treasuries			14,658						17,613						156						418						—						—						14,815						18,031
U.S. Government Agencies			16,005						6,546						—						3						(169)						—						15,835						6,549
			$	1,043,278					$	997,188					$	4,039					$	15,437					$	(5,729)					$	(343)					$	1,041,589					$	1,012,282

The scheduled maturities of available-for-sale marketable securities as of December 31, 2021 are as follows:

			Amortized cost						Estimated fair value
Due within one year			$	280,261					$	281,365
Due after one year through five years			763,017						760,224
			$	1,043,278					$	1,041,589

Investments with continuous unrealized losses for less than 12 months and 12 months or greater and their related fair values as of December 31, 2021 and 2020 are as indicated in the following tables:

			December 31, 2021
			Investments with continuous unrealized losses for less than 12 months												Investments with continuous unrealized losses for 12 months or greater												Total Investments with continuous unrealized losses
			Fair value						Unrealized losses						Fair value						Unrealized losses						Fair value						Unrealized losses
Corporate debentures			$	494,731					$	(4,413)					$	156,840					$	(1,147)					$	651,571					$	(5,560)
U.S. Treasuries			—						—						—						—						—						—
U.S. Government Agencies			15,835						(169)						—						—						15,835						(169)
			$	510,566					$	(4,582)					$	156,840					$	(1,147)					$	667,406					$	(5,729)

			December 31, 2020
			Investments with continuous unrealized losses for less than 12 months												Investments with continuous unrealized losses for 12 months or greater												Total Investments with continuous unrealized losses
			Fair value						Unrealized losses						Fair value						Unrealized losses						Fair value						Unrealized losses
Corporate debentures			$	194,587					$	(337)					$	8,590					$	(6)					$	203,177					$	(343)
U.S. Treasuries			2,936						—						—						—						2,936						—
U.S. Government Agencies			—						—						—						—						—						—
			$	197,523					$	(337)					$	8,590					$	(6)					$	206,113					$	(343)

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- References

No definition available.

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- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2209399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2324412

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2176304

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1403
-Paragraph (b)

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