Stock-Based Compensation (Details 2)	Dec. 31, 2016 shares
Exercise Price Range $2.34 to $4.25 [Member]
Options Outstanding (in shares)	627
Options Exercisable (in shares)	125
Exercise Price Range $2.34 to $4.25 [Member] \| Minimum [Member]
Exercise Price	2.34
Exercise Price Range $2.34 to $4.25 [Member] \| Maximum [Member]
Exercise Price	4.25
Exercise Price Range $4.88 to $5.23 [Member]
Options Outstanding (in shares)	1,430
Options Exercisable (in shares)	1,168
Exercise Price Range $4.88 to $5.23 [Member] \| Minimum [Member]
Exercise Price	4.88
Exercise Price Range $4.88 to $5.23 [Member] \| Maximum [Member]
Exercise Price	5.23
Exercise Price Range $7.00 to $9.01 [Member]
Options Outstanding (in shares)	842
Options Exercisable (in shares)	415
Exercise Price Range $7.00 to $9.01 [Member] \| Minimum [Member]
Exercise Price	7.00
Exercise Price Range $7.00 to $9.01 [Member] \| Maximum [Member]
Exercise Price	9.01
Exercise Price Range $12.43 to $14.06 [Member]
Options Outstanding (in shares)	768
Options Exercisable (in shares)	246
Exercise Price Range $12.43 to $14.06 [Member] \| Minimum [Member]
Exercise Price	12.43
Exercise Price Range $12.43 to $14.06 [Member] \| Maximum [Member]
Exercise Price	14.06
Exercise Price Range [Member]
Options Outstanding (in shares)	3,667
Options Exercisable (in shares)	1,954

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.

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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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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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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