Share-based Compensation - Schedule of Stock Options Activity (Details)	3 Months Ended
Mar. 31, 2017 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares Options, Outstanding at beginning of quarter \| shares	850,232
Number of shares Options, Granted \| shares
Number of shares Options, Exercised \| shares	(1,396)
Number of shares Options, Forfeited prior to vesting \| shares	(3,664)
Number of shares Options, Canceled or Expired \| shares
Number of shares Options, Outstanding at end of quarter \| shares	845,172
Number of shares Options, Exercisable at end of quarter \| shares	613,174
Weighted Average Exercise Price, Outstanding at beginning of quarter \| $ / shares	$ 8.06
Weighted Average Exercise Price, Granted \| $ / shares
Weighted Average Exercise Price, Exercised \| $ / shares	6.53
Weighted Average Exercise Price, Forfeited prior to vesting \| $ / shares	9.85
Weighted Average Exercise Price, Canceled or Expired \| $ / shares
Weighted Average Exercise Price, Outstanding at end of quarter \| $ / shares	8.06
Weighted Average Exercise Price, Exercisable at end of Period \| $ / shares	$ 6.84

Number of shares Options, Forfeited prior to vesting.

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Weighted Average Exercise Price, Forfeited prior to vesting.

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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=96867065&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)-(4)
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Weighted average price of options that were either forfeited or expired.

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

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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