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Convertible Notes - Additional Information (Detail)		1 Months Ended		3 Months Ended	6 Months Ended		23 Months Ended
	Jun. 16, 2020 USD ($) $ / shares	May 20, 2023	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2020 USD ($) $ / shares	Jun. 30, 2019 USD ($)	May 21, 2023 TradingDays $ / shares	Jun. 09, 2020 $ / shares
Convertible Senior Notes [Line Items]
Payments for stock repurchase					$ 26,444,000	$ 2,107,000
Debt instrument convertible threshold percentage of stock price trigger		130.00%
Principal amount of the convertible notes			$ 1,000
Interest expense				$ 377,000
Accounts Payable and Accrued Liabilities [Member]
Convertible Senior Notes [Line Items]
Interest payable			$ 377,000	377,000	$ 377,000
Convertible Senior Notes Due Two Thousand And Twenty Three [Member]
Convertible Senior Notes [Line Items]
Convertible debt equity component				4,153,000
Issuance costs allocated to equity component of convertible debt				$ 128,000
Convertible Senior Notes Due Two Thousand And Twenty Three [Member] | Fair Value, Inputs, Level 2 [Member]
Convertible Senior Notes [Line Items]
Long term debt, debt component fair value	$ 145,847,000
Convertible notes discount rate			5.33	5.33	5.33
Fair value of debt component of convertible senior notes			$ 142,202,000	$ 142,202,000	$ 142,202,000
Convertible Senior Notes Due Two Thousand And Twenty Three [Member] | Private Placement [Member]
Convertible Senior Notes [Line Items]
Convertible senior notes face value	$ 150,000,000
Convertible senior notes stated rate of interest			4.25%	4.25%	4.25%
Covertible senior notes year of maturity	2023
Payments for stock repurchase	$ 23,850,000
Repurchased common stock, shares | shares			6,445,949
Repurchase price per share | $ / shares	$ 3.70							$ 3.70
Convertible senior notes maturity date			Jun. 15, 2023	Jun. 15, 2023	Jun. 15, 2023
Convertible debt instrument terms of interest payment			Interest rate of 4.25%:
Convertible debt instrument conversion price | $ / shares			$ 5.92	$ 5.92	$ 5.92
Convertible debt instrument terms of conversion					Convertible at an initial conversion rate of 168.9189 shares of the Company’s common stock, per $1,000 principal amount of notes
Convertible Debt Instrument Percentage Of Premium On The Share Price			60.00%	60.00%	60.00%
Debt instrument redemption price as a percentage of principal amount,accrued interest and unpaid interest			100.00%
Maximum Conversion Rate			270.2702
Debt instrument percentage of principal amount due to lenders entitled to declare repurchase			25.00%	25.00%	25.00%
Maximum number of shares issuable upon conversion | shares			40,540,530
Convertible Senior Notes Due Two Thousand And Twenty Three [Member] | Private Placement [Member] | Scenario, Forecast [Member]
Convertible Senior Notes [Line Items]
Debt instrument convertible threshold trading days | TradingDays							20
Debt instrument convertible threshold consecutive trading days | TradingDays							30
Convertible debt instrument redemption price per unit | $ / shares							$ 7.70
US National Bank Association [Member] | Convertible Senior Notes Due Two Thousand And Twenty Three [Member] | Private Placement [Member] | Scenario, Forecast [Member]
Convertible Senior Notes [Line Items]
Debt instrument redemption price as a percentage of principal amount,accrued interest and unpaid interest							100.00%

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- Definition

Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature.

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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

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The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only.

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Description of the conversion terms of a debt instrument which may include the conversion ratio (including all potential conversion ratios if contingently adjustable), type of debt or equity security into which the debt is convertible, the dollars of debt or the number of shares into which the instrument is convertible (or potentially convertible into), the conversion period, any contingencies associated with the conversion terms, and the existence and amount of a beneficial conversion feature.

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

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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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Aggregate amount of interest paid or due on all long-term debt.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Maturity date of long-term debt, in CCYY-MM-DD format.

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Price of a single share of a number of saleable stocks of a company.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Debt instrument holders holding a certain percentage of principal amount due entitled to declare purchase in the event of default.

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