Employee Stock Purchase Plan, Number Of Shares Authorized, Annual Increase

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- Definition

Employee Stock Purchase Plan, Number Of Shares Authorized, Annual Percentage Increase

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No definition available.

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- Definition

Employee Stock Purchase Plan, Purchase Price Percentage

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Non-Option Equity Instruments, Performance Condition

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Non-Option Equity Instruments, Performance Condition, Period

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Tranches

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-based Payment Award, Award Period For Sale Of Company Or IPO

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-based Payment Award, Service-Based Condition Period After Grant Date

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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, Annual Percentage Increase

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Remaining For Available For Issuance

+ References

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.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

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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.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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

Net number of non-option equity instruments granted to participants.

+ 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 (c)(1)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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).

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

+ 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 (d)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

+ 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 (a)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

+ 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 (c)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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STOCK-BASED COMPENSATION - Narrative (Details) $ / shares in Units, user in Millions, $ in Millions	1 Months Ended		3 Months Ended			12 Months Ended
	Feb. 28, 2018 USD ($)	May 31, 2013 $ / shares	Jun. 30, 2018 USD ($) shares	Mar. 31, 2018 USD ($) tranche user $ / shares shares	Mar. 31, 2017 USD ($) $ / shares	Dec. 31, 2016 shares	Feb. 08, 2018 shares	Jan. 31, 2018 shares	May 31, 2017 shares	May 30, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)							1,875,000
Number of shares remaining available for issuance (in shares)							61,247
Number of shares authorized, annual increase				5.00%
Weighted-average grant date fair value (in usd per share) \| $ / shares		$ 3.91		$ 10.00	$ 7.32
Options vested in period, fair value \| $				$ 1.2	$ 0.6
Award vesting period				4 years
Expiration period				10 years
Compensation not yet recognized \| $				$ 10.4
Common stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized				2 years 8 months 12 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				1,210,000
Number of tranches \| tranche				2
RSU issued (in shares)				437,500
Compensation not yet recognized, awards other than options \| $				$ 24.3
Compensation cost not yet recognized				4 years 3 months 18 days
Restricted stock units \| Share-based Compensation Award, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU, performance condition \| user				70.0
RSU, performance condition, period				3 years
Restricted stock units \| Share-based Compensation Award, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU, performance condition \| user				85.0
RSU, performance condition, period				5 years
Restricted securities units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSU issued (in shares)						1,000,000
RSU, service condition period				6 months
Award period for sale of company or IPO				5 years
Stock option expense \| $	$ 0.5
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				375,000
ESPP, purchase price percentage				85.00%
ESPP, number of shares authorized, annual percentage increase				1.00%
ESPP, number of shares authorized, annual increase (in shares)				500,000
2008 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)								4,020,000	3,495,000	3,120,000
Employees and non-employee directors \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				335,562
Employees and non-employee directors \| Minimum \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				1 year
Employees and non-employee directors \| Maximum \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
Forecast \| Subsequent Event \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Granted (in shares)			32,070
Compensation not yet recognized, awards other than options \| $			$ 0.5