Black-Scholes Assumptions [Abstract]

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Contractual life of stock options and other awards under the shared-based compensation plans

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- Definition

Option Vesting Schedule [Abstract]

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The percentage of a share-based payment award that vests in year one.

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The percentage of a share-based payment award that vests in year three.

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The percentage of a share-based payment award that vests in year two.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage, Quarter Four

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage, Quarter One

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage, Quarter Three

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage, Quarter Two

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage, Upon Receipt

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No definition available.

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- Definition

Period the instrument, asset or liability is expected to be outstanding, 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 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Risk-free interest rate assumption used in valuing an instrument.

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- Definition

Weighted average expected dividend for an entity using a valuation technique with different dividend rates during the contractual term.

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- Definition

Weighted average expected volatility of stock price.

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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=6415400&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.

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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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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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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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-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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- 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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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=6415400&loc=d3e5070-113901

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- Definition

Value of stock related to Restricted Stock Awards issued during the period, net of the stock value of such awards forfeited.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Section 50
-Paragraph 2
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Share-Based Compensation - Plan Information (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Oct. 31, 2015	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in the period (shares)			2,050,000
Contractual life of stock options and other awards under share-based compensation plans			10 years
Black-Scholes Assumptions [Abstract]
Expected life			4 years 10 months 24 days	5 years 3 months 18 days	5 years 4 months 24 days
Expected volatility			68.90%	82.90%	89.60%
Expected dividend yield			$ 0	$ 0	$ 0
Risk-free interest rate			1.70%	1.80%	1.50%
Weighted average fair value of options granted during the year			$ 0.18	$ 0.39	$ 0.34
All Other Stock Option Awards [Member]
Option Vesting Schedule [Abstract]
Vesting percentage, year one			33.00%
Vesting percentage, year two			33.00%
Vesting percentage, year three			33.00%
2008 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the Plan, shares			5,000,000
Options granted in the period (shares)			1,350,000	359,700	325,000
Discretionary bonus					$ 0.1
Remaining shares available for grant under the Plan			2,265,318
Contractual life of stock options and other awards under share-based compensation plans			10 years
2008 Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)			0		205,532
2011 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the Plan, shares			3,500,000
Options granted in the period (shares)			700,000	300,000	2,000,000
Number of shares granted (shares)			600,000	400,000
Remaining shares available for grant under the Plan			15,120
Contractual life of stock options and other awards under share-based compensation plans			10 years
2011 Plan [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)		2,000,000
Option Vesting Schedule [Abstract]
Vesting percentage, upon receipt			25.00%
Vesting percentage, year one			25.00%
Vesting percentage, year two			25.00%
Vesting percentage, year three			25.00%
2011 Plan [Member] \| Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted (shares)	750,000		250,000
Option Vesting Schedule [Abstract]
Vesting percentage, upon receipt			25.00%
Vesting percentage, year one			25.00%
Vesting percentage, year two			25.00%
Vesting percentage, year three			25.00%
Vesting percentage, quarter one			25.00%
Vesting percentage, quarter two			25.00%
Vesting percentage, quarter three			25.00%
Vesting percentage, quarter four			25.00%