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Stock-Based Compensation Arrangements (Detail Textuals 1) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	12 Months Ended
	May 22, 2015	Dec. 31, 2016	Dec. 31, 2015
Stock options
Stock-based compensation
Granted (in shares)		197,841	122,523
Weighted average grant-date fair value (in dollars per share)		$ 3.66	$ 6.16
Stock options | 2015 Plan
Stock-based compensation
Number of shares reserved	291,667
Maximum life of stock option awards granted	10 years
Stock options | Minimum | 2015 Plan
Stock-based compensation
Vesting period	1 year
Stock options | Maximum | 2015 Plan
Stock-based compensation
Vesting period	4 years
Stock options | Employees and directors | 2015 Plan
Stock-based compensation
Granted (in shares)		197,841	122,523
Grant date fair value		$ 0.7	$ 0.8
Weighted average grant-date fair value (in dollars per share)		$ 3.66	$ 6.16
Total remaining unrecognized compensation cost		$ 0.4
Weighted-average remaining requisite service period of recognition of unrecognized compensation cost		1 year 8 months 9 days
Performance Based Options | Employees and directors | 2015 Plan
Stock-based compensation
Granted (in shares)		189,091

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- Definition

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+ References

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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+ 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 (a)(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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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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