Share-based compensation arrangment by share-based payment award vesting date.

No definition available.

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- Definition

Share-based compensation award grants unvest minimum threshold limit of gross revenue for vesting of grants.

+ 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809

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-Publisher FASB
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-Topic 718
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-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=109197908&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

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&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://fasb.org/us-gaap/role/ref/legacyRef
-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=109197908&loc=d3e5070-113901

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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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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=109197908&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

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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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Share-based compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 05, 2018	Mar. 29, 2018	Jul. 31, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Mar. 22, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amortization of share based compensation expense				$ 218	$ 563	$ 432	$ 2,246
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized share-based compensation costs in respect of granted RSUs, excluding RSUs with Performance Criteria				4,449		$ 4,449
Unrecognized share-based compensation weighted average period						3 years
2018 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of common stock authorized								3,000,000
2018 Stock Incentive Plan \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units granted			602,000
2018 Stock Incentive Plan \| Restricted Stock Units (RSUs) \| Non-employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units granted		56,000
Grant date fair value per share		$ 6.10
2018 Stock Incentive Plan \| Restricted Stock Units (RSUs) \| Executive Officers and Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units granted	1,487,500
Grant date fair value per share	$ 7.69
Vesting period	3 years
Gross revenue threshold limit for vesting of grants	$ 7,000
Amortization of share based compensation expense				$ 0		$ 0
2018 Stock Incentive Plan \| Restricted Stock Units (RSUs) \| Executive Officers and Directors \| Time-Based Vesting, Year One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting date	Jul. 01, 2019
2018 Stock Incentive Plan \| Restricted Stock Units (RSUs) \| Executive Officers and Directors \| Time-Based Vesting, Year Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting date	Jul. 01, 2020
2018 Stock Incentive Plan \| Restricted Stock Units (RSUs) \| Executive Officers and Directors \| Time-Based Vesting, Year Three
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting percentage	33.33%
Vesting date	Jul. 01, 2021
2018 Stock Incentive Plan \| Minimum \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value per share			$ 7.53
Vesting period			3 years
2018 Stock Incentive Plan \| Minimum \| Restricted Stock Units (RSUs) \| Non-employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		1 year
2018 Stock Incentive Plan \| Maximum \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant date fair value per share			$ 8.60
Vesting period			4 years
2018 Stock Incentive Plan \| Maximum \| Restricted Stock Units (RSUs) \| Non-employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years