Employee stock purchase plan offering period.

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- Definition

First offering period end date.

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- Definition

First offering period start date.

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- Definition

Number of equity incentive plans.

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of noncash expense for share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

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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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

Number of additional shares authorized for issuance under share-based payment arrangement.

+ References

No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Description of terms of award under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-Based Compensation and Employee Stock Purchase Program - Additional Information (Detail)				1 Months Ended	3 Months Ended
	Feb. 02, 2022 shares	May 20, 2015 shares	May 14, 2015	Jun. 30, 2019 shares	Mar. 31, 2023 USD ($) IncentivePlan shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans \| IncentivePlan					2
Shares Subject to Outstanding, Options granted					2,700
Total number of options outstanding					61,844		60,002
Intrinsic value of options exercised \| $					$ 0	$ 0
Unrecognized compensation cost related to unvested stock-based compensation grants \| $					$ 988,000
Weighted-average remaining recognition period					2 years 2 months 12 days
Stock-based compensation \| $					$ 212,000	260,000
2015 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares reserved for issuance under plan					9,194
Stock-based compensation \| $					$ 1,000	$ 1,000
Percentage in payroll deductions to acquire shares of common stock			15.00%
Purchase plan offering period			6 months
Employees are able to purchase company's common stock on first trading day of offering period, percentage			85.00%
Issuance of common stock pursuant to employee stock purchase plan					1,563
First offering period, start date			May 14, 2015
First offering period, end date			Feb. 01, 2016
Inducement Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of options outstanding					8,477		8,477
Inducement Stock Option [Member] \| Stanley Jacot, Jr. [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Subject to Outstanding, Options granted	7,902
2015 Omnibus Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Terms under the plan					The 2015 Plan became effective upon the Company’s IPO in May 2015 and all shares that were reserved, but not issued, under the 2006 Plan were assumed by the 2015 Plan. Upon effectiveness, the 2015 Plan had 3,860 shares of common stock reserved for future issuance, which included 259 that were transferred to and assumed by the 2015 Plan. The 2015 Plan provides for automatic annual increases in shares available for grant. In addition, shares subject to awards under the 2006 Plan that are forfeited or canceled will be added to the 2015 Plan.
Total number of shares reserved for issuance under plan		3,860			90,861
Options vesting period		4 years
Additional shares authorized for issuance under the plan				3,000
Common stock available for future grant					37,598
Total number of options outstanding					53,263		51,421
2015 Omnibus Equity Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable period		10 years
2006 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares reserved for issuance under plan		259
Total number of options outstanding					103		103