Intrinsic value of equity-based compensation awards vested and expected to vest. Excludes stock and unit options.

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Weighted average price at which grantees can acquire the shares reserved for issuance other than options.

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Weighted average remaining contractual term for fully vested and expected to vest Other Than options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest Other than stock options outstanding can be converted under the option plan.

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Represents the percentage of shares that vested or to be vested on the first vesting date.

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Represents the percentage of shares that will vest on each subsequent vesting dates.

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The offering period under the Employee Stock Purchase plan.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, 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 number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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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No definition available.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Percentage of vesting of share-based compensation awards.

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Intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section D
-Subsection 2

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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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Stock-Based Compensation (Details 2) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended		12 Months Ended
	Sep. 25, 2014	Apr. 15, 2014	Feb. 28, 2015	Apr. 30, 2014	Dec. 31, 2015	Dec. 31, 2014
Aggregate Intrinsic value
Stock-based compensation expense					$ 3,470	$ 1,719
Nonvested restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Granted			117,131		126,621
Cancelled					(2,179)
Non-vested at end of period					124,442
Vested and expected to vest at the end of period ( in units)					116,964
Weighted-Average Exercise Price
Granted, Weighted-Average Grant Date Fair Value					$ 10.53
Cancelled					10.53
Nonvested at the end of the period					10.53
Vested and expected to vest at end of period					$ 10.53
Weighted Average Remaining Contractual Term
Non-vested Weighted Average Remaining Contractual Term (in years)					2 years 10 months 24 days
Vested and expected to vest at the end of period ( in years)					2 years 10 months 24 days
Aggregate Intrinsic value
Non-vested, Aggregate Intrinsic Value					$ 385
Vested and expected to vest, Aggregate Intrinsic Value					361
Unrecognized stock-based compensation expense					$ 972
Unrecognized stock-based compensation expense, Recognition period					2 years 11 months 5 days
Percentage of shares that will vest on first vesting date			25.00%
Percentage of shares that will vest on subsequent vesting date			25.00%
Nonvested restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Non-vested at beginning of period					13,259
Vested					(13,259)
Non-vested at end of period					0	13,259
Weighted-Average Exercise Price
Nonvested at the beginning of the period					$ 5.08
Granted, Weighted-Average Grant Date Fair Value						$ 5.08
Vested, Weighted-Average Grant Date Fair Value					$ 5.08
Nonvested at the end of the period						$ 5.08
Aggregate Intrinsic value
Stock-based compensation expense					$ 58	$ 98
Nonvested restricted stock awards \| Vendor for consulting services
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Granted				53,036
Aggregate Intrinsic value
Vesting percentage	50.00%	25.00%			25.00%
RSU Issued As Merit Grants
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares
Granted			9,490
2004 Plan
Aggregate Intrinsic value
Shares available for issuance					0
2015 Plan
Aggregate Intrinsic value
Shares available for issuance					394,402
Employee Stock Purchase Plan
Aggregate Intrinsic value
Risk-free interest rate					0.42%
Expected volatility					76.01%
Expected term					6 months
Expected dividend yield					0.00%
Unrecognized stock-based compensation expense					$ 21
Unrecognized stock-based compensation expense, Recognition period					5 months
Stock-based compensation expense					$ 4
Shares available for issuance					352,722
Offering period					6 months
Percentage of market price					85.00%