Goodwill and Other Intangibles Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018	Jul. 31, 2018
Finite-Lived Intangible Assets
Amortization of intangible assets	$ 209,000	$ 253,000	$ 419,000	$ 507,000
Amortization expense for remainder of current fiscal year	417,000		417,000
Indefinite-lived trademarks	$ 376,000		$ 376,000
Goodwill impairment loss					$ 0