Aggregate number of common shares reserved for future issuance.

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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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The cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards other than stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Discount rate from fair value on offering date that participants pay for shares.

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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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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The addition or reduction in the number of reserved shares that could potentially be issued under the option plan attributable to reasons other than grants, exercises, forfeitures, and expirations during the reporting period.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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

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Stock Incentive Plans - Additional Information (Detail) - USD ($)			3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jan. 02, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Apr. 21, 2016	Jan. 01, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options to purchase common stock granted			$ 2.01	$ 2.10	$ 2.06	$ 2.62
Share-based compensation expense, tax benefit recognized					$ 0
Share-based compensation costs, capitalized					0
Total unrecognized stock-based compensation expense related to stock options and RSUs			$ 2,200,000		$ 2,200,000
Non-vested stock options and RSUs weighted average remaining period of recognition					2 years 6 months 29 days
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized stock-based compensation expense related to stock options and RSUs			$ 1,400,000		$ 1,400,000
Non-vested stock options and RSUs weighted average remaining period of recognition					3 years 5 months 23 days
2014 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance of common stock			838,695		838,695			357,075
Outstanding shares of common stock, in percentage		4.00%
Fair market value of Company's common stock			$ 4.31		$ 4.31
2014 Equity Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares may be added to the plan hereunder					865,252
2016 Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of common stock shares that might be granted							155,500
2014 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Applicable exercise date an offering period shall be equal to percentage of the lesser of fair market value of common stock					85.00%
2014 Employee Stock Purchase Plan [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate proceeds from the issuance of shares	$ 100,000
Shares issued under ESPP	35,024