CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Cash flows from operating activities:
Net loss	$ (44,391,000)	$ (5,284,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	23,289,000	23,075,000
Amortization of intangible assets	20,258,000	27,255,000
Amortization of deferred financing costs	571,000	435,000
Accretion of debt discount	1,290,000	622,000
Impairment of goodwill	25,658,000	0
Impairment of long-lived assets	498,000	0
Share-based compensation	591,000	720,000
Non-cash lease expense	14,186,000	14,263,000
Other losses (gains), net	439,000	(2,098,000)
Changes in operating assets and liabilities:
Accounts receivable, net	23,505,000	20,305,000
Inventories, net	(722,000)	8,510,000
Prepaid expenses and other current assets	(1,823,000)	12,396,000
Accounts payable and accrued expenses	(19,201,000)	(17,464,000)
Refundable and accrued income taxes, net	(1,242,000)	(630,000)
Other assets and liabilities	(19,839,000)	(10,481,000)
Net cash provided by operating activities	23,067,000	71,624,000
Cash flows from investing activities:
Additions to property and equipment	(3,615,000)	(12,070,000)
Proceeds from the disposition of property and equipment	289,000	21,000
Proceeds from the sale of available-for-sale securities	0	163,000
Net cash used in investing activities	(3,326,000)	(11,886,000)
Cash flows from financing activities:
Proceeds from the Cerberus revolving facility	0	19,000,000
Payments on the Cerberus revolving facility	0	(25,000,000)
Payments of long-term debt	(7,642,000)	(3,154,000)
Payments of debt financing and amendment costs	0	(914,000)
Payments of preferred dividends	(2,129,000)	(2,135,000)
Repayments on capital lease obligations	(70,000)	(100,000)
Proceeds from issuance of common stock	4,000	19,000
Net cash used in financing activities	(9,837,000)	(12,284,000)
Net effect of exchange rate changes on cash and cash equivalents	597,000	1,124,000
Net increase in cash, cash equivalents and restricted cash	10,501,000	48,578,000
Cash, cash equivalents and restricted cash, beginning of period	94,642,000	46,064,000
Cash, cash equivalents and restricted cash, end of period	$ 105,143,000	$ 94,642,000