Statements of Operations-Additional Information - Annuity Purchase Agreement (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended
Jul. 31, 2023	Dec. 31, 2023	Dec. 31, 2023
Statements of Operations-Additional Information
Annuity purchase price	$ 26,381
Pension settlement cost		$ 249	$ 10,674

Amount of noncash expense (reversal of expense) for pension benefits. Excludes other postretirement benefits.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Name:	us-gaap_PensionExpenseReversalOfExpenseNoncash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration