Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 2,556	$ 8,237
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,773	7,065
Non-cash stock-based compensation	1,453	1,290
Deferred income taxes	32	742
Provision for bad debts and cash discounts	(59)	(38)
Loss on the disposals of property, plant and equipment	265	12
(Increase) Decrease in assets:
Accounts receivable	(5,023)	(3,798)
Inventories	(6,236)	412
Prepaid expenses	846	(760)
Other assets	634	(266)
Increase (Decrease) in liabilities:
Accounts payable	1,326	(3,901)
Accrued expenses	(1,595)	(5,201)
Deferred compensation	690	585
Pension and postretirement benefits	(616)	(437)
Other liabilities	(985)	(857)
Total Adjustments	(2,495)	(5,152)
Net Cash Provided by Operating Activities	61	3,085
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(10,574)	(7,598)
Proceeds from sale of property, plant, and equipment	0	3
Net Cash Used in Investing Activities	(10,574)	(7,595)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from issuance of notes payable	25,000	0
Payments of debt issuance costs	(114)	0
Dividends paid	(3,728)	(3,606)
Purchase of treasury stock	(6,201)	(2,189)
Net Cash Provided by (Used in) Financing Activities	14,957	(5,795)
Effect of exchange rate changes on Cash and Cash Equivalents	(26)	123
Net Increase (Decrease) in Cash and Cash Equivalents	4,418	(10,182)
Cash and Cash Equivalents, Beginning of Period	24,591	40,890
Cash and Cash Equivalents, End of Period	29,009	30,708
Supplemental disclosure of non-cash investing and financing activities:
Interest payments, net of amounts capitalized	178	198
Income tax payments	155	5,478
Capital expenditures accrued, but not paid	835	829
Cash dividends declared and accrued, but not paid	$ 1,845	$ 1,799