SEGMENT INFORMATION - Summarized Financial Information of Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Segment Reporting Information [Line Items]
Revenue from contracts with customers	$ 194,003	$ 193,921	$ 615,359	$ 450,181
Operating income (loss)	2,157	1,380	7,819	(8,153)
Total other income (expense)	(10,386)	(11,198)	(32,650)	(19,919)
Loss before income taxes	(8,229)	(9,818)	(24,831)	(28,072)
Americas
Segment Reporting Information [Line Items]
Revenue from contracts with customers	17,164		51,313
Asia
Segment Reporting Information [Line Items]
Revenue from contracts with customers	39,312		128,123
Europe
Segment Reporting Information [Line Items]
Revenue from contracts with customers	16,747		56,718
Direct Marketing
Segment Reporting Information [Line Items]
Revenue from contracts with customers	116,006		362,547
e-Business services
Segment Reporting Information [Line Items]
Revenue from contracts with customers	4,774		16,658
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	4,592	6,372	17,595	8,716
Operating Segments | Americas
Segment Reporting Information [Line Items]
Revenue from contracts with customers	17,164	13,061	51,313	41,664
Operating income (loss)	(1,733)	(2,032)	(5,752)	(6,518)
Operating Segments | Asia
Segment Reporting Information [Line Items]
Revenue from contracts with customers	39,312	31,820	128,123	111,622
Operating income (loss)	3,366	1,903	13,861	21,795
Operating Segments | Europe
Segment Reporting Information [Line Items]
Revenue from contracts with customers	16,747	22,942	56,718	99,225
Operating income (loss)	(1,154)	(1,770)	(3,980)	(8,089)
Operating Segments | Direct Marketing
Segment Reporting Information [Line Items]
Revenue from contracts with customers	116,006	120,646	362,547	180,178
Operating income (loss)	5,308	9,917	16,770	5,965
Operating Segments | e-Business services
Segment Reporting Information [Line Items]
Revenue from contracts with customers	4,774	5,452	16,658	17,492
Operating income (loss)	(1,195)	(1,646)	(3,304)	(4,437)
Corporate-level activity
Segment Reporting Information [Line Items]
Operating income (loss)	$ (2,435)	$ (4,992)	$ (9,776)	$ (16,869)