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Stock-Based Compensation - Disclosures (Details) - shares	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2015	May. 21, 2015
Stock Based Compensation disclosures
Shares of common stock, maximum authorized for issuance			5,000,000
Shares available for grant		4,295,221
Inducement stock option granted to new employees		227,000
Previous equity compensation plan
Stock Based Compensation disclosures
RSUs and stock options in excess of the per person annual sub-limits	1,400,000

X

- Definition

Represents the number of share based compensation awards which exceeded the maximum number of awards allowable per employee.

+ References

No definition available.

+ Details

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X

- Definition

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

+ 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

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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X

- 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.

+ 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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