Condensed Consolidated Statements of Cash Flows (Unaudited) Supplemental schedule of noncash financing activities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Derivative Liability	$ 2,878	$ 4,277
Document Period End Date	Jun. 30, 2016
Forfeiture of certain shares to satisfy exercise costs and the recipients income tax obligations related to stock options exercised and restricted stock vested, Value	$ 77
Common Stock Repurchase not settled, Shares	(30,000)	(25,000)
Common Stock Repurchase not settled, Value	$ (1,400)	$ (820)