Exercise price of the option.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Footnote 5

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option 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)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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

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

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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

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

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Weighted average remaining contractual term of outstanding stock options, 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 (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Stock-Based Compensation (Stock Options Outstanding And Exercisable) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	1,314,435	1,391,636	1,429,842	70,638
Options Exercisable	979,435	709,136	406,092	56,638
Intrinsic Value of Options Outstanding	$ 4,284
Intrinsic Value of Options Exercisable	$ 3,218
Weighted-Average Life of Options Outstanding	7 years 9 months 18 days
Weighted-Average Life of Options Exercisable	7 years 8 months 12 days
$0.91 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 0.91
Options Outstanding	4,274
Options Exercisable	4,274
Intrinsic Value of Options Outstanding	$ 31
Intrinsic Value of Options Exercisable	$ 31
Weighted-Average Life of Options Outstanding	1 year 10 months 24 days
Weighted-Average Life of Options Exercisable	1 year 10 months 24 days
$0.93 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 0.93
Options Outstanding	5,161
Options Exercisable	5,161
Intrinsic Value of Options Outstanding	$ 38
Intrinsic Value of Options Exercisable	$ 38
Weighted-Average Life of Options Outstanding	1 year 10 months 24 days
Weighted-Average Life of Options Exercisable	1 year 10 months 24 days
$2.30 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 2.30
Options Outstanding	35,000
Options Exercisable	35,000
Intrinsic Value of Options Outstanding	$ 208
Intrinsic Value of Options Exercisable	$ 208
Weighted-Average Life of Options Outstanding	3 years 4 months 24 days
Weighted-Average Life of Options Exercisable	3 years 4 months 24 days
$5.05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 5.05
Options Outstanding	1,260,000
Options Exercisable	925,000
Intrinsic Value of Options Outstanding	$ 4,007
Intrinsic Value of Options Exercisable	$ 2,942
Weighted-Average Life of Options Outstanding	8 years
Weighted-Average Life of Options Exercisable	8 years
$9.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$ 9.00
Options Outstanding	10,000
Options Exercisable	10,000
Intrinsic Value of Options Outstanding	$ 0
Intrinsic Value of Options Exercisable	$ 0
Weighted-Average Life of Options Outstanding	6 months
Weighted-Average Life of Options Exercisable	6 months