Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant [Roll Forward]

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting 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)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&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=6415400&loc=d3e5070-113901

+ Details

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- 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

+ Details

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Stockholders' Equity - Activities Under Equity Plan (Details) - shares	3 Months Ended												12 Months Ended			39 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016
Number of Shares Available for Grant [Roll Forward]
Beginning Balance, Equity securities available (shares)			1,483,231				1,747,586				1,720,752		1,483,231	1,747,586	1,720,752
Granted (shares)	(6,034)	(5,605)	(6,141)	(5,869)	(6,242)	(5,494)	(4,823)	(5,328)	(7,110)	(6,006)	(5,093)	(6,475)				(70,220)
Ending Balance, Equity securities available (shares)				1,483,231				1,747,586				1,720,752	1,246,939	1,483,231	1,747,586	1,246,939
Eligible Employees \| Restricted Stock Units
Number of Shares Available for Grant [Roll Forward]
Forfeited (shares)															57,338
Granted (shares)													(212,643)	(242,468)
Eligible Employees \| Common Stock
Number of Shares Available for Grant [Roll Forward]
Granted (shares)															(5,820)
Non Executive Directors \| Restricted Stock
Number of Shares Available for Grant [Roll Forward]
Granted (shares)													(23,649)	(21,887)	(24,684)