SEGMENT INFORMATION - Summarized Financial Information of Continuing Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Segment Reporting Information [Line Items]
Revenue from contracts with customers	$ 51,548	$ 49,434	$ 150,223	$ 178,552
Operating income (loss)	31	(2,514)	652	2,536
Total other expense, net	1,306	(465)	(745)	(5,893)
Income (loss) from continuing operations before income taxes	1,337	(2,979)	(93)	(3,357)
Operating segments
Segment Reporting Information [Line Items]
Operating income (loss)	1,548	(534)	5,894	9,574
Operating segments | Supply Chain
Segment Reporting Information [Line Items]
Revenue from contracts with customers	51,548	49,434	150,223	178,552
Operating income (loss)	1,548	(534)	5,894	9,574
Corporate
Segment Reporting Information [Line Items]
Operating income (loss)	$ (1,517)	$ (1,980)	$ (5,242)	$ (7,038)