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Stock Based Compensation (Details 1) - Stock options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Number of Options Outstanding
Options outstanding at December 31, 2016	389,379
Granted
Cancelled/forfeited	(1,860)
Options outstanding at March 31, 2017	387,519	389,379
Unvested at March 31, 2017	(258,124)
Vested and exercisable at March 31, 2017	129,395
Weighted Average Exercise Price Per Share
Options outstanding at December 31, 2016	$ 25.80
Granted
Cancelled/forfeited	655.18
Options outstanding at March 31, 2017	22.78	$ 25.80
Unvested at March 31, 2017	5.28
Vested and exercisable at March 31, 2017	$ 57.68
Weighted Average Remaining Contractual Term (Years)
Options outstanding	5 years 7 months 10 days	5 years 9 months 29 days
Unvested at March 31, 2017	5 years 29 days
Vested and exercisable at March 31, 2017	6 years 8 months 5 days
Aggregate Intrinsic Value
Options outstanding		$ 121
Unvested at March 31, 2017
Vested and exercisable at March 31, 2017

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Represents the amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options unvested.

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Weighted average remaining contractual term for unvested options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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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 non-vested options outstanding.

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Weighted average grant-date fair value of non-vested options outstanding.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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