Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of marketable securities

	December 31, 2021
	Amortized cost		Gross unrealized gain		Gross unrealized loss			Fair value
Matures within one year:
Corporate debentures	$	25,430	$	170	$	-		$	25,600
Government debentures		2,507		9		-			2,516
		27,937		179		-			28,116
Matures after one year through four years:
Corporate debentures		140,364		435		(1,090	)		139,709
Government debentures		9,648		11		(99	)		9,560
		150,012		446		(1,189	)		149,269
Total	$	177,949	$	625	$	(1,189	)	$	177,385

	December 31, 2020
	Amortized Cost		Gross unrealized gain		Gross unrealized loss			Fair value
Matures within one year:
Corporate debentures	$	13,106	$	210	$	-		$	13,316
Government debentures		402		-		-			402
		13,508		210		-			13,718
Matures after one year through four years:
Corporate debentures		63,611		1,815		(3	)		65,423
Government debentures		6,145		79		(11	)		6,213
		69,756		1,894		(14	)		71,636
Total	$	83,264	$	2,104	$	(14	)	$	85,354

Schedule of investments with continuous unrealized losses

	December 31, 2021
	Less than 12 months					More than 12 months					Total
	Fair Value		Unrealized Losses			Fair value		Unrealized losses			Fair value		Unrealized losses
Corporate debentures	$	114,199	$	(1,075	)	$	1,063	$	(15	)	$	115,262	$	(1,090	)
Government debentures		6,524		(91	)		2,253		(8	)		9,047		(99	)
Total	$	120,723	$	(1,166	)	$	3,586	$	(23	)	$	124,309	$	(1,189	)

	December 31, 2020
	Less than 12 months					More than 12 months				Total
	Fair value		Unrealized Losses			Fair value		Unrealized losses		Fair value		Unrealized losses
Corporate debentures	$	3,821	$	(3	)	$	-	$	-	$	3,821	$	(3	)
Government debentures		3,002		(11	)		-		-		3,002		(11	)
Total	$	6,823	$	(14	)	$	-	$	-	$	6,823	$	(14	)

Schedule of assets and liabilities measured at fair value

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities	$	-	$	177,385	$	-	$	177,385
Foreign currency derivative contracts		-		317		-		317
Total financial assets	$	-	$	177,702	$	-	$	177,702

	December 31, 2020
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities	$	-	$	85,354	$	-	$	85,354
Total financial assets	$	-	$	85,354	$	-	$	85,354