Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2022	Jul. 31, 2021
Current Assets
Cash and cash equivalents	$ 22,825	$ 24,591
Accounts receivable, less allowance of   $1,149 and $1,174 at April 30, 2022 and July 31, 2021, respectively	43,287	40,923
Inventories	34,951	23,598
Prepaid repairs expense	6,150	6,088
Prepaid expenses and other assets	6,489	6,742
Total Current Assets	113,702	101,942
Property, Plant and Equipment
Cost	276,396	274,825
Less accumulated depreciation and amortization	(174,166)	(178,885)
Total Property, Plant and Equipment, Net	102,230	95,940
Other Assets
Goodwill	3,618	9,262
Other intangibles, net of accumulated amortization of $497 and $385 at April 30, 2022 and July 31, 2021, respectively	1,473	1,743
Customer list, net of accumulated amortization of $7,536 and $7,321 at April 30, 2022 and July 31, 2021, respectively	249	464
Deferred income taxes	3,410	2,096
Operating lease right-of-use assets	9,934	8,619
Other	6,836	7,500
Total Other Assets	25,520	29,684
Total Assets	241,452	227,566
Current Liabilities
Current maturities of notes payable	1,000	1,000
Accounts Payable	10,099	9,206
Dividends payable	1,845	1,865
Operating lease liabilities	1,766	2,036
Accrued expenses	26,697	24,883
Total Current Liabilities	41,407	38,990
Noncurrent Liabilities
Notes payable, net of unamortized debt issuance costs of $212 and $122 at April 30, 2022 and July 31, 2021, respectively	32,788	7,878
Deferred compensation	4,926	4,370
Pension and postretirement benefits	3,919	4,922
Long-term operating lease liabilities	9,552	8,022
Other	3,105	4,152
Total Noncurrent Liabilities	54,290	29,344
Total Liabilities	95,697	68,334
Stockholders’ Equity
Additional paid-in capital	51,117	48,271
Retained earnings	175,368	180,443
Noncontrolling interest	(362)	(307)
Accumulated Other Comprehensive Loss:
Pension and postretirement benefits	(4,349)	(4,428)
Cumulative translation adjustment	124	311
Total Accumulated Other Comprehensive Loss	(4,225)	(4,117)
Less Treasury Stock, at cost (3,535,568 Common and 351,641 Class B shares at April 30, 2022 and 3,192,702 Common and 346,491 Class B shares at July 31, 2021)	(77,251)	(66,154)
Total Stockholders' Equity	145,755	159,232
Total Liabilities & Stockholders’ Equity	241,452	227,566
Common Stock
Stockholders’ Equity
Common Stock, Value, Issued	868	856
Common Class B
Stockholders’ Equity
Common Stock, Value, Issued	$ 240	$ 240