Investments (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Marketable Securities [Line Items]
Amortized Cost	$ 76,417,000		$ 76,417,000		$ 89,411,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(624,000)		(624,000)		(978,000)
Credit Losses	0		0		0
Estimated Fair Value	75,793,000		$ 75,793,000		$ 88,433,000
Remaining contractual maturity period			3 years		3 years
Impairments of assets	0	$ 0	$ 0	$ 0
Short-term investments
Marketable Securities [Line Items]
Estimated Fair Value	54,808,000		54,808,000		$ 68,471,000
Long-term investments
Marketable Securities [Line Items]
Estimated Fair Value	20,985,000		20,985,000		19,962,000
Commercial paper
Marketable Securities [Line Items]
Amortized Cost	12,494,000		12,494,000		15,707,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(15,000)		(15,000)		(101,000)
Credit Losses	0		0		0
Estimated Fair Value	12,479,000		12,479,000		15,606,000
Corporate notes
Marketable Securities [Line Items]
Amortized Cost	43,864,000		43,864,000		52,159,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(492,000)		(492,000)		(831,000)
Credit Losses	0		0		0
Estimated Fair Value	43,372,000		43,372,000		51,328,000
U.S. government securities
Marketable Securities [Line Items]
Amortized Cost	2,476,000		2,476,000
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(1,000)		(1,000)
Credit Losses	0		0
Estimated Fair Value	2,475,000		2,475,000
U.S. government agency bonds
Marketable Securities [Line Items]
Amortized Cost	17,583,000		17,583,000		21,545,000
Gross Unrealized Gains	0		0		0
Gross Unrealized Losses	(116,000)		(116,000)		(46,000)
Credit Losses	0		0		0
Estimated Fair Value	$ 17,467,000		$ 17,467,000		$ 21,499,000