Awards Vesting, Right to Receive Shares of Common Stock, Number

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- Definition

Number of Directors

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested and Unsettled, Number

+ References

No definition available.

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- Definition

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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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

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

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

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No definition available.

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- Definition

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

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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- Definition

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

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

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- Definition

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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- Definition

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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- Definition

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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- Definition

Amount of cash paid related to share-based compensation liabilities.

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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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- Definition

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

+ References

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- Definition

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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- 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

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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- Definition

Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

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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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Stock-based Payments - Additional Information (Details)	1 Months Ended	12 Months Ended
Stock-based Payments - Additional Information (Details)	Apr. 30, 2017 shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) director $ / shares shares	Dec. 31, 2015 USD ($)	Dec. 31, 2015 $ / shares	Nov. 29, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of awards		10 years
Weighted average grant date, fair values stock options (in dollars/CAD per share) \| (per share)		$ 3.15	$ 7.12		$ 10.60
Weighted average exercise price of option granted (in CAD per share) \| (per share)		$ 7.70	$ 8.27		$ 4.84
Intrinsic value of options exercised \| $		$ 0	$ 0	$ 4,900,000
Cash proceeds from options exercised \| $		$ 500,000	0	5,500,000
Weighted-average exercise price of options outstanding that are expected to vest \| $ / shares		$ 8.00
Share based compensation expense recognized \| $		$ 4,537,000	$ 838,000	2,375,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $		$ 4,397,000
Unrecognized compensation expense, weighted-average recognition period		2 years 6 months 22 days
Stock options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Stock options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Time-vested RSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		2 years
Time-vested RSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Performance-based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Performance-based RSUs \| Vesting Installment 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage		33.33%
Performance-based RSUs \| Vesting Installment 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage		33.33%
Performance-based RSUs \| Vesting Installment 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights percentage		33.33%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, weighted-average recognition period		1 year 4 months 6 days
Restricted stock units outstanding (in shares)		445,017,000	1,028,881,000
Number of shares of common stock to received by each award vested (in shares)		1
Unrecognized share-based compensation expense of awards \| $		$ 2,500,000
Weighted average grant date fair value of right granted (in dollars per share) \| $ / shares		$ 4.59
Rights granted (in shares)		218,500,000
NVLN Plan \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grant (in shares)		4,760,000
Number of shares of common stock available for grant (in shares)		2,277,417
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value of right granted (in dollars per share) \| $ / shares		$ 1.06
Share based compensation expense recognized \| $		$ 100,000
Rights granted (in shares)		0
ESPP \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance (in shares)	278,710
Percentage of common stock authorized to purchase by employees through periodic payroll deductions	15.00%
Percentage of purchase price at which stocks can be purchased	85.00%
DDSU Plan \| DSUs \| Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		36 months
Number of shares issued under share-based compensation arrangement with individual (in shares)		0
Share-based compensation liabilities paid \| $		$ 100,000	$ 100,000	$ 0
Number of directors \| director			2
Number of awards vested and unsettled (in shares)			28,400
Deferred compensation liabilities \| $						$ 60,000