Stock-based Activity (Details 1) - $ / shares	6 Months Ended	12 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Options Outstanding
Options Outstanding	438,248	32,823	32,823	720,543
Options Granted	223,716	353,493	407,547	12,280
Options Exercised	0		(376)	0
Options Forfeited/cancelled/expired	(29,655)		(1,746)	0
Options Outstanding	632,310		438,248	32,823
Vested and exercisable at June 30, 2016	135,840		24,054
Weighted-Average Exercise Price
Weighted-Average Exercise Price, Outstanding at beginning of period	$ 17.46	$ 29.00	$ 29.00	$ 8.81
Weighted-Average Exercise Price, Granted	5.40		16.50	62.68
Weighted-Average Exercise Price, Exercised	0		2.15	0.00
Weighted-Average Exercise Price, Forfeited/cancelled/expired	17.02		54.91	0.00
Weighted-Average Exercise Price, Outstanding and expected to vest at end of period	14.06		17.46	$ 29.00
Weighted-Average Exercise Price, Vested and exercisable at June 30, 2016	$ 18.80		$ 26.57

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.

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

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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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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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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 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 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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