Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2022	Jul. 31, 2021
Current Assets
Cash and cash equivalents	$ 29,009	$ 24,591
Accounts receivable, less allowance of   $1,093 and $1,174 at January 31, 2022 and July 31, 2021, respectively	45,970	40,923
Inventories	29,797	23,598
Prepaid repairs expense	6,454	6,088
Prepaid expenses and other assets	5,524	6,742
Total Current Assets	116,754	101,942
Property, Plant and Equipment
Cost	272,980	274,825
Less accumulated depreciation and amortization	(173,119)	(178,885)
Total Property, Plant and Equipment, Net	99,861	95,940
Other Assets
Goodwill	9,262	9,262
Other intangibles, net of accumulated amortization of $471 and $385 at January 31, 2022 and July 31, 2021, respectively	1,792	1,743
Customer list, net of accumulated amortization of $7,464 and $7,321 at January 31, 2022 and July 31, 2021, respectively	321	464
Deferred income taxes	2,066	2,096
Operating lease right-of-use assets	10,570	8,619
Other	6,588	7,500
Total Other Assets	30,599	29,684
Total Assets	247,214	227,566
Current Liabilities
Current maturities of notes payable	1,000	1,000
Accounts Payable	10,145	9,206
Dividends payable	1,845	1,865
Operating lease liabilities	2,080	2,036
Accrued expenses	23,802	24,883
Total Current Liabilities	38,872	38,990
Noncurrent Liabilities
Notes payable, net of unamortized debt issuance costs of $222 and $122 at January 31, 2022 and July 31, 2021, respectively	32,778	7,878
Deferred compensation	5,060	4,370
Pension and postretirement benefits	4,253	4,922
Long-term operating lease liabilities	9,892	8,022
Other	3,068	4,152
Total Noncurrent Liabilities	55,051	29,344
Total Liabilities	93,923	68,334
Stockholders’ Equity
Additional paid-in capital	50,220	48,271
Retained earnings	179,322	180,443
Noncontrolling interest	(338)	(307)
Accumulated Other Comprehensive Loss:
Pension and postretirement benefits	(4,375)	(4,428)
Cumulative translation adjustment	217	311
Total Accumulated Other Comprehensive Loss	(4,158)	(4,117)
Less Treasury Stock, at cost (3,380,955 Common and 351,641 Class B shares at January 31, 2022 and 3,192,702 Common and 346,491 Class B shares at July 31, 2021)	(72,862)	(66,154)
Total Stockholders' Equity	153,291	159,232
Total Liabilities & Stockholders’ Equity	247,214	227,566
Common Stock
Stockholders’ Equity
Common Stock, Value, Issued	867	856
Common Class B
Stockholders’ Equity
Common Stock, Value, Issued	$ 240	$ 240