Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 3,216	$ 1,954
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,539	6,413
Amortization of investment net discount	(10)	(57)
Stock-based compensation	898	770
Deferred income taxes	106	5,312
Provision for bad debts and cash discounts	(168)	155
Loss on the sale of fixed assets	1	31
Life insurance benefits	0	(334)
(Increase) Decrease in assets:
Accounts receivable	(4,529)	362
Inventories	(5,607)	75
Prepaid expenses	970	(51)
Other assets	(422)	55
Increase (Decrease) in liabilities:
Accounts payable	2,295	(743)
Accrued expenses	(1,390)	(3,637)
Deferred compensation	(436)	268
Pension and postretirement benefits	859	649
Other liabilities	370	407
Total Adjustments	(524)	9,675
Net Cash Provided by Operating Activities	2,692	11,629
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(6,199)	(6,850)
Proceeds from sale of property, plant and equipment	0	11
Purchases of short-term investments	(3,948)	(24,101)
Dispositions of short-term investments	10,602	25,840
Net Cash Provided by (Used in) Investing Activities	455	(5,100)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal payments on notes payable	(3,083)	(3,083)
Dividends paid	(3,287)	(3,112)
Purchase of treasury stock	(135)	(27)
Net Cash Used in Financing Activities	(6,505)	(6,222)
Effect of exchange rate changes on cash and cash equivalents	(24)	(21)
Net (Decrease) Increase in Cash and Cash Equivalents	(3,382)	286
Cash and Cash Equivalents, Beginning of Period	12,757	9,095
Cash and Cash Equivalents, End of Period	9,375	9,381
Supplemental disclosure of non-cash investing and financing activities:
Capital expenditures accrued, but not paid	416	890
Cash dividends declared and accrued, but not paid	$ 1,680	$ 1,559