Face amount or stated value per right.

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Payments for redemption of rights pursuant to a stockholder rights plan.

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A security giving shareholders entitlement to acquire new shares issued by the entity at an established price in proportion to the number of shares already owned. Generally, rights expire within a short time after issuance.

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Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Unvested Shares Accelerated

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Number of authorized capital units or capital shares. This element is relevant to issuers of face-amount certificates and registered investment companies.

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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Number of additional shares authorized for issuance under an established share-based compensation plan.

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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 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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Stockholders' (Deficit) Equity (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended		12 Months Ended
	Aug. 19, 2015	Apr. 20, 2015	Sep. 30, 2016	May 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Apr. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Capital stock shares authorized						105,000,000
Preferred stock shares authorized						5,000,000
Preferred stock, par value (in dollars per share)					$ 0.001	$ 0.001
Common stock shares authorized						100,000,000
Common stock, par value (in dollars per share)					$ 0.001	$ 0.001
Redemption price, amount					$ 246
2006 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be issued under the stock incentive plan						4,500,000	3,500,000
Number of additional shares authorized to be issued under the stock incentive plan				1,000,000
Number of shares available to be issued under the stock incentive plan						534,861
Rights Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Redemption price (in dollars per right)		$ 0.01
Redemption price, amount		$ 246
Dividend, right						1
Rights Plan [Member] \| Series A Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities called by each right						0.001
Right, exercise price (in dollars per share)						$ 15
Employee Stock Option and Restricted Stock [Member] \| Non-Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of unvested shares accelerated			17.00%
Chief Operating Officer [Member] \| Non-Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash severance expense			$ 250
Employee Stock Option [Member] \| Chief Operating Officer [Member] \| 2006 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award of non-qualified options to purchase common stock, amount (in shares)	250,000
Employee Stock Option [Member] \| Chief Operating Officer [Member] \| Non-Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award of non-qualified options to purchase common stock, amount (in shares)	450,000
Restricted Stock [Member] \| Chief Operating Officer [Member] \| Non-Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award of non-qualified options to purchase restricted stock, amount (in shares)	300,000