Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Cash Flows from Operating Activities
Net Income	$ 18,740	$ 12,615
Adjustments to reconcile net income to net cash provided by operating activites:
Depreciation and amortization	13,923	13,330
Amortization of investment discounts	0	(10)
Non-cash stock compensation expense	3,368	2,407
Deferred income taxes	453	(406)
Provision for bad debts and cash discounts	423	(179)
Loss on the disposals of property, plant and equipment	114	6
Curtailment gain on SERP Plan	(1,296)	0
(Increase) decrease in:
Accounts receivable	(12)	(1,729)
Inventories	213	(1,693)
Prepaid expenses	(949)	(786)
Other assets	(1,242)	(617)
Increase (decrease) in:
Accounts payable	4,238	590
Accrued expenses	8,632	(589)
Deferred compensation	421	(86)
Pension and postretirement benefits	(5,684)	3,307
Other liabilities	1,120	583
Total Adjustments	23,722	14,128
Net Cash Provided by Operating Activities	42,462	26,743
Cash Flows from Investing Activities
Capital expenditures	(14,740)	(15,029)
Proceeds from sale of property, plant and equipment	63	7
Purchases of short-term investments	0	(4,678)
Dispositions of short-term investments	0	11,812
Net Cash Used in Investing Activities	(14,677)	(7,888)
Cash Flows from Financing Activities
Proceeds from issuance of notes payable	10,000	0
Principal payments on notes payable	(6,321)	(3,083)
Dividends paid	(7,030)	(6,656)
Purchase of treasury stock	(5,541)	(147)
Contributions from noncontrolling interests	142	0
Net Cash Used in Financing Activities	(8,750)	(9,886)
Effect of exchange rate changes on cash and cash equivalents	(7)	136
Net Increase in Cash and Cash Equivalents	19,028	9,105
Cash and Cash Equivalents, Beginning of Year	21,862	12,757
Cash and Cash Equivalents, End of Year	40,890	21,862
Other cash flows:
Interest payments, net of amounts capitalized	273	305
Income tax payments (refund)	(2,319)	(713)
Noncash investing and financing activities:
Capital expenditures accrued, but not paid	2,990	2,263
Cash dividends declared and accrued, but not paid	$ 1,808	$ 1,761