Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2023	Jul. 31, 2022
Current Assets
Cash and cash equivalents	$ 13,951	$ 16,298
Accounts receivable, net allowances of   $1,037 and $922 at January 31, 2023 and July 31, 2022, respectively	57,179	51,683
Inventories, net	37,938	35,562
Prepaid repairs	8,107	7,474
Prepaid expenses and other assets	2,413	3,664
Total Current Assets	119,588	114,681
Property, Plant and Equipment
Cost	292,615	283,240
Less accumulated depreciation and amortization	(180,936)	(175,374)
Total Property, Plant and Equipment, Net	111,679	107,866
Other Assets
Goodwill	3,618	3,618
Trademarks and patents, net of accumulated amortization of $550 and $524 at January 31, 2023 and July 31, 2022, respectively	1,476	1,445
Customer list, net of accumulated amortization of $7,685 and $7,608 at January 31, 2023 and July 31, 2022, respectively	100	177
Deferred income taxes	3,511	3,677
Operating lease right-of-use assets	9,460	10,601
Other	6,612	7,546
Total Other Assets	24,777	27,064
Total Assets	256,044	249,611
Current Liabilities
Current maturities of notes payable	1,000	1,000
Accounts Payable	11,048	13,401
Dividends payable	1,858	1,851
Operating lease liabilities	1,850	2,178
Accrued expenses	33,785	30,085
Total Current Liabilities	49,541	48,515
Noncurrent Liabilities
Notes payable, net of unamortized debt issuance costs of $191 and $202 at January 31, 2023 and July 31, 2022, respectively	31,809	31,798
Deferred compensation	4,441	4,559
Pension and postretirement benefits	434	798
Long-term operating lease liabilities	8,919	9,749
Other	3,926	3,843
Total Noncurrent Liabilities	49,529	50,747
Total Liabilities	99,070	99,262
Stockholders’ Equity
Additional paid-in capital	54,328	52,467
Retained earnings	184,133	178,754
Noncontrolling interest	(390)	(369)
Accumulated Other Comprehensive Loss:
Pension and postretirement benefits	(2,255)	(2,242)
Cumulative translation adjustment	(70)	59
Total Accumulated Other Comprehensive Loss	(2,325)	(2,183)
Less Treasury Stock, at cost (3,624,677 Common and 351,641 Class B shares at January 31, 2023 and 3,609,938 Common and 351,641 Class B shares at July 31, 2022)	(79,886)	(79,428)
Total Stockholders' Equity	156,974	150,349
Total Liabilities & Stockholders’ Equity	256,044	249,611
Common Stock
Stockholders’ Equity
Common Stock, Value, Issued	874	868
Common Class B
Stockholders’ Equity
Common Stock, Value, Issued	$ 240	$ 240