Marketable Securities - (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Investments
Amortized Cost	$ 4,831,000		$ 4,831,000		$ 15,818,000
Gross Unrealized Gain					19,000
Gross Unrealized Loss	(3,000)		(3,000)		(1,000)
Estimated Fair Value	4,828,000		4,828,000		15,836,000
Gross realized gains	0	$ 0	1,000	$ 0
Gross realized loss	0	$ 0		$ 0
Fair market value of investments in unrealized loss position	4,800,000		4,800,000
Unrealized losses in a continuous loss position for more than 12 months	0		0
Accrued interest receivable	$ 100,000		$ 100,000		$ 300,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Current, Statement of Financial Position [Extensible Enumeration]	Prepaid Expense and Other Assets, Current		Prepaid Expense and Other Assets, Current		Prepaid Expense and Other Assets, Current
Cost Maturities:
Within 1 year	$ 4,831,000		$ 4,831,000
Total investments available for sale	4,831,000		4,831,000
Fair Value Maturities:
Within 1 year	4,828,000		4,828,000
Total investments available for sale	4,828,000		4,828,000
Corporate bonds
Investments
Amortized Cost	4,831,000		4,831,000		$ 15,818,000
Gross Unrealized Gain					19,000
Gross Unrealized Loss	(3,000)		(3,000)		(1,000)
Estimated Fair Value	$ 4,828,000		$ 4,828,000		$ 15,836,000

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-2