The number of additional shares purchasable after the public offering for certain parties.

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Other Equity-Based Plans

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Number of the shares issued over number of the the common stock sold in percentage.

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Percentage of the warrant issuance price of share price.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Section S99
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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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- Definition

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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- Definition

The cash inflow from the additional capital contribution to the entity.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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No definition available.

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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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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of share instruments newly issued under a share-based compensation plan.

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Price of a single share of a number of saleable stocks of a company.

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No definition available.

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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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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

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No definition available.

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Number of new stock issued during the period.

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Stockholders' Equity - Narrative (Details) $ / shares in Units, $ in Thousands							1 Months Ended		12 Months Ended
	Sep. 16, 2015 USD ($)	Sep. 11, 2015 $ / shares shares	Aug. 11, 2014 USD ($)	Aug. 08, 2014 shares	Aug. 06, 2014 $ / shares shares	Aug. 06, 2014 $ / shares shares	Sep. 30, 2013 shares	Jul. 31, 2013	Dec. 31, 2016 USD ($) plan $ / shares shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Jul. 22, 2015 shares	May 06, 2014 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock (in shares)		1,500,000			1,175,000
Share price (in dollars per share) \| $ / shares		$ 17.00			$ 4.50	$ 4.50			$ 4.25
Proceeds from issuances of common stock, net \| $	$ 23,600		$ 5,150						$ 0	$ 23,574	$ 5,952
Additional shares purchased (in shares)				176,250	176,250
Number of shares					47,000	47,000
Warrant issuance of common stock sold						4.00%
Exercise price (in dollars per share) \| $ / shares					$ 5.40	$ 5.40
Percentage of public offering price						120.00%
Number of additional other equity-based plans \| plan									2
Vesting period									10 years
Unamortized stock compensation expense \| $									$ 1,200	$ 992
Remaining weighted average life									1 year 9 months 15 days	1 year 10 months 21 days
Intrinsic value of options exercised \| $									$ 126
Intrinsic value of options outstanding \| $									106
Intrinsic value of options exercisable \| $									$ 106
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized							500,000
Number of shares available for grant (in shares)									443,441
Purchase price of common stock, percent							85.00%
Shares issued in the period (in shares)									22,094	18,119	9,932
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period									1 year
Minimum \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting periods										1 year
Minimum \| Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting periods								1 year
Minimum \| Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period									1 year
Maximum \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting periods										3 years
Maximum \| Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period									4 years
2014 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized												600,000	600,000
Vesting periods									10 years
Number of shares available for grant (in shares)									546,638
2014 Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period									3 years
2014 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period									4 years
Shares sold by selling stockholders
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock (in shares)		1,500,000