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Stockholders' Equity (Details 1) - Stock Option [Member]	9 Months Ended
	Sep. 30, 2018 $ / shares shares
Stock Options:
Number of Options, Outstanding beginning balance | shares	980,588
Number of Options, Granted | shares	120,130
Number of Options, Exercised | shares	(6,363)
Number of Options, Expired or canceled, during the period | shares	(1,429)
Number of Options, Forfeited, during the period | shares	(25,399)
Number of Options, Outstanding ending balance | shares	1,067,527
Number of Options, Exercisable | shares	559,232
Weighted Average Exercise Price, Outstanding beginning balance | $ / shares	$ 5.02
Weighted Average Exercise Price, Granted | $ / shares	5.95
Weighted Average Exercise Price, Exercised | $ / shares	4.43
Weighted Average Exercise Price, Expired or canceled, during the period | $ / shares	42.35
Weighted Average Exercise Price, Forfeited, during the period | $ / shares	4.45
Weighted Average Exercise Price, Outstanding ending balance | $ / shares	5.10
Weighted Average Exercise Price, Exercisable | $ / shares	$ 6.05

X

- Definition

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

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-SubTopic 10
-Section 50
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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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