Expiration period of option awards.

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- Definition

Share based compensation arrangement by share based payment award percentage from fair market price.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share-based payment Award, options, granted, contractual term (in years)

+ 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://www.xbrl.org/2003/role/presentationRef
-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=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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- Definition

Number of common shares reserved for future issuance related to deferred compensation arrangements with individuals.

+ References

No definition available.

+ Details

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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

Unrecognized cost of unvested share-based compensation awards.

+ 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=6415400&loc=d3e5070-113901

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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=6415400&loc=d3e5070-113901

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- Definition

Date the equity-based award expires, in CCYY-MM-DD format.

+ 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=6415400&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=6415400&loc=d3e5070-113901

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- Definition

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

+ 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=6415400&loc=d3e5070-113901

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Share-based compensation - Additional Information (Detail) - USD ($)		1 Months Ended		3 Months Ended
	Sep. 10, 2004	Sep. 17, 2014	Aug. 27, 2008	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Aug. 19, 1999
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation expense				$ 11,000	$ 77,000
Issuance of stock option to purchase stock				6,000,000
Common stock reserved for issuance				4,439,023
Stock option awards vesting period				2 years
Unrecognized compensation cost related to bon-vested				$ 4,000
Intrinsic value of options exercised						$ 1,309,000
Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation arrangement by share based payment award options granted contractual term				10 years
Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation arrangement by share based payment award options granted contractual term				3 years
2004 Stock Incentive Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock reserved for issuance	2,500,000
Plan expiration date	Sep. 10, 2014
2008 Stock Incentive Plan \| Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expiration period of option awards			10 years
2008 Stock Incentive Plan \| Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expiration period of option awards			5 years
2014 Stock Incentive Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock reserved for issuance		3,000,000
Plan expiration date		Sep. 17, 2024
Share based compensation arrangement by share based payment award percentage of fair market Person holding more then 10% voting stock		110.00%
2014 Stock Incentive Plan \| Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expiration period of option awards		10 years
2014 Stock Incentive Plan \| Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expiration period of option awards		5 years
Stock Option Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options granted					70,000
2008 Stock Incentive Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock reserved for issuance			3,000,000
Plan expiration date			Aug. 27, 2018
Share based compensation arrangement by share based payment award percentage of fair market Person holding more then 10% voting stock			110.00%
1997 Employee Stock Option Plan
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock reserved for issuance							2,000,000