Shareholders' Equity (Details Textual) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016
Shareholder Rights Plan (Textual) [Abstract]
Stock Issued During Period, Value, Conversion of Convertible Securities	$ 15,332		$ 16,629
Convertible Notes Due in 2017 [Member]
Class of Warrant or Right [Line Items]
Debt Conversion, Converted Instrument, Shares Issued			7,863
Convertible Notes Due in 2019 [Member]
Class of Warrant or Right [Line Items]
Debt Conversion, Converted Instrument, Shares Issued		713	713
Common Shares
Shareholder Rights Plan (Textual) [Abstract]
Stock Issued During Period, Value, Conversion of Convertible Securities			$ 86
Additional Paid-in Capital
Shareholder Rights Plan (Textual) [Abstract]
Stock Issued During Period, Value, Conversion of Convertible Securities			$ 16,543