Number of equity plans.

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Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Contribution Percent

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Offering Periods

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Shares Authorized Per Purchase Period

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Share-Based Compensation Arrangement By Share-Based Payment Award, Offering Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Offering Period

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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 outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (c)(2)(iii)(1)
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

The highest quantity of shares an employee can purchase under the plan per period.

+ 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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-Paragraph 2
-Subparagraph (a)(3)
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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

Gross number of share options (or share units) granted during the period.

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No definition available.

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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

The number of shares purchased on the open market during the period for issuance to employees under the plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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- Definition

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

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No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Stockholders' Equity (Details) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
	May 17, 2017 period shares	Aug. 31, 2017 shares	Mar. 31, 2018 USD ($) Plan $ / shares shares	Apr. 01, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans \| Plan			2
Stock options granted (in shares)			65,000
Weighted-average grant date fair value (in dollars per share) \| $ / shares			$ 6.20
Stock options exercised (in shares)			1,420
Weighted-average exercise price per share, stock options (in dollars per share) \| $ / shares			$ 5.42
Unrecognized stock-based compensation expense, stock options \| $			$ 3,700
Weighted-average amortization period			2 years 10 months 24 days
Taxes paid for awards vested under equity incentive plans \| $			$ 5	$ 1,093
Performance Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)			1,165,000
Weighted-average grant date fair value (in dollars per share) \| $ / shares			$ 3.43
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average amortization period			1 year 7 months 6 days
Awards granted (in shares)			27,586
Weighted-average grant date fair value per share (in dollars per share) \| $ / shares			$ 7.25
Awards vested (in shares)			152,821
Unrecognized stock-based compensation expense \| $			$ 6,600
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average amortization period			1 month 14 days
Unrecognized stock-based compensation expense \| $			$ 200
ESPP, maximum employee payroll deduction percentage			15.00%
ESPP, maximum number of shares per employee (in shares)			2,000
ESPP, discounted purchase price percentage			85.00%
ESPP, shares purchased			0
Offering period			6 months
Shares available for issuance under the ESPP (in shares)			2,455,691
Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average amortization period			10 months 24 days
Awards vested (in shares)			75,000
Unrecognized stock-based compensation expense \| $			$ 100
2017 Nonqualified Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense, stock options \| $			$ 1,800
Weighted-average amortization period			10 months 24 days
Maximum contribution percent (up to 25%)	25.00%
Number of offering periods \| period	2
Offering period	6 months
Number of shares authorized	1,000,000
Number of shares authorized per purchase period	500,000
Executive Officer \| Performance Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)		1,200,000