Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Number of shares of common stock issued as dividends during the period. Excludes stock splits.

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Number of shares issued for each share of convertible preferred stock that is converted.

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Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The amount of accretion of the preferred stock redemption discount during the period.

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The percentage rate used to calculate dividend payments on preferred stock.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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Redeemable Convertible Preferred Stock - Additional Information (Detail)		3 Months Ended				6 Months Ended
	Jul. 29, 2019 shares	Jun. 30, 2019 USD ($) shares	Mar. 31, 2019 USD ($) shares	Jun. 30, 2018 USD ($) shares	Mar. 31, 2018 USD ($) shares	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($) shares	Dec. 31, 2018 USD ($) shares	May 31, 2012 shares
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares issued		1,000,000				1,000,000		1,000,000
Accretion amount \| $		$ 16,000	$ 16,000	$ 15,000	$ 15,000
Series A convertible preferred stock, outstanding shares elected for conversion		1,000,000				1,000,000		1,000,000
Common Stock
Temporary Equity [Line Items]
Common stock issued as payment of preferred stock, shares		10,810	10,695	16,403	6,350
Subsequent Event
Temporary Equity [Line Items]
Reverse stock split, ratio	0.125
Subsequent Event \| Common Stock
Temporary Equity [Line Items]
Conversion of convertible preferred stock into common stock	276,549
Maximum
Temporary Equity [Line Items]
Accretion amount \| $						$ 30,000	$ 30,000
Series A Convertible Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares issued									1,000,000
Warrants to purchase common stock									325,000
Cumulative dividends at a rate						6.00%
Common stock issued as payment of preferred stock, shares						21,506	22,753
Series A Convertible Preferred Stock \| Accounts Payable and Other Accrued Expenses
Temporary Equity [Line Items]
Total accrued but unpaid dividends \| $		$ 80,000				$ 80,000		$ 80,000