Stock Purchase Plan, Purchases Pursuant to 2007 Stock Purchase Plan (Details) - 2007 Stock Purchase Plan [Member] - $ / shares		1 Months Ended		3 Months Ended
	Jul. 31, 2022	Sep. 25, 2022	Aug. 28, 2022	Sep. 25, 2022	May 23, 2007
Stock Purchase Plan [Abstract]
Total number of shares purchased (in shares)	891,350	0	219,541	1,110,891
Average price paid per share (in dollars per share)	$ 1.2	$ 0	$ 1.35	$ 1.23
Total number of shares purchased as part of publicly announced plan (in shares)	3,552,399	3,771,940	3,771,940
Maximum number of shares that may yet be purchased under the plan (in shares)	4,463,601	4,244,060	4,244,060	4,244,060	1,016,000