PARENT COMPANY CONDENSED FINANCIAL INFORMATION - Schedule of Statements of Cash Flows (Detail) - USD ($) $ in Thousands		12 Months Ended
	Mar. 12, 2013	Jul. 31, 2019	Jul. 31, 2018
Cash flows from operating activities:
Net income (loss)		$ (66,727)	$ 36,715
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of deferred financing costs		771	1,072
Share-based compensation		1,267	10,801
Gains on investments in affiliates and impairments		(42)	(801)
Changes in operating assets and liabilities, net of business acquired:
Prepaid expenses and other current assets		5,519	4,797
Other assets and liabilities		2,316	(6,176)
Net cash provided by operating activities		20,849	10,002
Cash flows from investing activities:
Net cash used in investing activities		(14,478)	(452,320)
Cash flows from financing activities:
Proceeds from issuance of preferred stock		0	35,000
Proceeds from issuance of Convertible Note		14,940	0
Payments on maturity of Convertible Notes		(63,925)	0
Payment of preferred dividends		(2,129)	(1,143)
Purchase of the Company's Convertible Notes		(3,700)	0
Proceeds from issuance of common stock	$ 27,700	15	8
Net cash provided by (used in) financing activities		(63,812)	421,879
Net decrease in cash, cash equivalents and restricted cash		(57,762)	(20,298)
Cash, cash equivalents and restricted cash, beginning of period		103,826	124,124
Cash, cash equivalents and restricted cash, end of period		46,064	103,826
Parent Company
Cash flows from operating activities:
Net income (loss)		(66,727)	36,715
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of deferred financing costs		243	388
Accretion of debt discount		3,433	4,384
Share-based compensation		1,267	10,763
Non-cash (gains) losses, net		7	(354)
Equity (gains) losses of subsidiaries, net of tax		48,079	(54,276)
Gains on investments in affiliates and impairments		(42)	(801)
Changes in operating assets and liabilities, net of business acquired:
Prepaid expenses and other current assets		(107)	(36)
Accounts payable and accrued expenses		669	698
Other assets and liabilities		(250)	(1,860)
Net cash provided by operating activities		(13,428)	(4,379)
Cash flows from investing activities:
Intercompany advances, net		64,332	(22,216)
Net cash used in investing activities		64,332	(22,216)
Cash flows from financing activities:
Proceeds from issuance of preferred stock		0	35,000
Proceeds from issuance of Convertible Note		14,940	0
Payments on maturity of Convertible Notes		(63,925)	0
Payment of preferred dividends		(2,129)	(1,143)
Purchase of the Company's Convertible Notes		(3,700)	0
Proceeds from issuance of common stock		15	8
Net cash provided by (used in) financing activities		(54,799)	33,865
Net decrease in cash, cash equivalents and restricted cash		(3,895)	7,270
Cash, cash equivalents and restricted cash, beginning of period		7,978	708
Cash, cash equivalents and restricted cash, end of period		$ 4,083	$ 7,978