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Derivative Instruments (fair value liability) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Gain/(Loss) on Derivative Instrument
Unrealized Gain (Loss) on Derivatives	$ (183)	$ 19	$ (340)	$ 45
Options [Member]
Gain/(Loss) on Derivative Instrument
Unrealized Gain (Loss) on Derivatives	(183)	19	(340)	4
Derivative on March 29, 2016 [Member]
Gain/(Loss) on Derivative Instrument
Unrealized Gain (Loss) on Derivatives	$ 0	$ 0	$ 0	$ 41

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- References

No definition available.

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