Accrued paid in kind interest.

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Principal amount per share.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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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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Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

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

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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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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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The cash outflow for the payment of a long-term borrowing made from a related party where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Payments for Advances from Affiliates.

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Borrowings - Mann Group Promissory Notes - Additional Information (Detail)		1 Months Ended	12 Months Ended
	Aug. 06, 2019 USD ($)	Aug. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares
Debt Instrument [Line Items]
Common stock, shares issued \| shares			211,787,573	187,029,967
Principal amount			$ 120,300,000
Gain (loss) on extinguishment of debt	$ 3,100,000		3,529,000	$ (765,000)
The Mann Group LLC
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt		$ 400,000
Unamortized debt issuance costs and debt discount			0	$ 600,000
The Mann Group LLC \| Convertible Promissory Note
Debt Instrument [Line Items]
Repayments of debt			$ 11,000,000
Conversion price of shares \| $ / shares			$ 2.50	$ 4.00
Principal amount			$ 35,000,000	$ 71,500,000
Accrued Paid-in-Kind Interest			$ 1,000,000	$ 6,800,000
Senior notes, effective interest rate			7.00%	5.84%
Maturity date			Nov. 30, 2024	Jul. 31, 2021
The Mann Group LLC \| Non-Convertible Promissory Note
Debt Instrument [Line Items]
Principal amount			$ 35,100,000
Accrued Paid-in-Kind Interest			$ 1,000,000
Senior notes, effective interest rate			7.00%
Maturity date			Nov. 30, 2024
The Mann Group LLC \| New Loan Arrangement \| Convertible Promissory Note
Debt Instrument [Line Items]
Conversion price of shares \| $ / shares		$ 2.50	$ 2.50
Principal amount			$ 35,000,000
Senior notes, effective interest rate		7.00%
Debt instrument payment term description			quarterly
Debt instrument, date of first required interest payment		Oct. 01, 2019
Maturity date		Nov. 03, 2024
No of convertible shares		400
Principal amount per share \| $ / shares		$ 1,000
The Mann Group LLC \| New Loan Arrangement \| Non-Convertible Promissory Note
Debt Instrument [Line Items]
Principal amount			$ 35,100,000
Senior notes, effective interest rate		7.00%
Debt instrument payment term description			quarterly
Debt instrument, date of first required interest payment		Oct. 01, 2019
Debt instrument, maturity date, description			The Mann Group non-convertible note will mature on the earlier of (i) November 3, 2024 or (ii) the 90th day after the repayment in full, and termination and discharge of all obligations (other than contingent indemnity obligations) under the MidCap Credit Facility. Interest on the Mann Group non-convertible note will be payable in kind by adding the amount thereof to the principal amount; provided that the Company may, at its option, elect to pay any such interest on any interest payment date, if certain conditions are met, in shares of the Company’s common stock at a price per shall equal to the last reported sale price on the trading day immediately prior to the interest payment date.
The Mann Group LLC \| Privately Negotiated Exchange Agreement
Debt Instrument [Line Items]
Repayments of debt		$ 3,000,000
Common stock, shares issued \| shares		7,142,857
Conversion price of shares \| $ / shares		$ 1.12
Conversion of notes to common shares, value		$ 71,500,000
Accrued Paid-in-Kind Interest		9,500,000
The Mann Group LLC \| Privately Negotiated Exchange Agreement \| New Loan Arrangement \| Convertible Promissory Note
Debt Instrument [Line Items]
Principal amount		35,000,000
The Mann Group LLC \| Privately Negotiated Exchange Agreement \| New Loan Arrangement \| Non-Convertible Promissory Note
Debt Instrument [Line Items]
Principal amount		$ 35,100,000