The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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The price per share of the conversion feature embedded in the debt instrument.

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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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DEBT - 7.5% Convertible Note (Details)	Feb. 28, 2019 USD ($) $ / shares	Jul. 31, 2019 USD ($)	Mar. 01, 2019	Jul. 31, 2018 USD ($)
Debt Instrument [Line Items]
Debt instrument stated percentage			5.25%
Debt instrument, redemption price percentage	100.00%
Carrying amount of equity component (net of allocated debt issuance costs)		$ 8,200,000
Long-term Debt		$ 375,937,000		$ 397,367,000
SPHG Holdings
Debt Instrument [Line Items]
Conversion ratio (shares)	0.4212655
Initial Conversion price (usd per share) \| $ / shares	$ 2.37
SPHG Holdings \| Convertible Senior Unsecured Note
Debt Instrument [Line Items]
Debt instrument stated percentage	7.50%	7.50%
Debt instrument issued	$ 14,900,000.0
SPHG Holdings \| Convertible Notes Payable
Debt Instrument [Line Items]
Debt instrument issued		$ 14,940,000
Long-term Debt		$ 7,432,000