Stock-Based Compensation (Details 1) - $ / shares	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Options, Outstanding:
Beginning balance	216,859	298,740
Issued		1,500
Exercised	(64,090)	(22,669)
Forfeited		(1,100)
Expired		(6,037)
Ending balance	152,769	270,434
Options, Outstanding, Weighted Average Exercise Price:
Beginning balance	$ 8.80	$ 9.97
Issued		49.91
Exercised	7.47	12.82
Forfeited		15.48
Expired		13.57
Ending balance	$ 9.36	$ 9.85

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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)(4)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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.

+ References

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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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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-Topic 718
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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 price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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