Debt Convertible Notes (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	May 19, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Stock Issued During Period, Value, Conversion of Convertible Securities	$ 15,332,000		$ 16,629,000
Existing Convertible Notes Exchanged, Amount				$ 34,016,000
New Convertible Notes exchanged, Amount				23,806,000
New Convertible Notes Exchanged, Non Affiliate, Amount				20,866,000
New Convertible Notes Exchange, Affiliate, Amount				2,940,000
Derivative Liability			403,000	$ 11,574,000	$ 0
Convertible Notes Due in 2017 [Member]
Debt Instrument [Line Items]
Convertible Debt			$ 41,000		57,500,000
Debt Instrument, Interest Rate, Stated Percentage			7.00%
Debt Instrument, Convertible, Conversion Rate, Principal Amount of Convertible Notes for Shares, Principal Amount			$ 1,000
Debt Conversion, Original Debt, Amount			$ 23,443,000
Debt Conversion, Converted Instrument, Shares Issued			7,863
Debt Restructuring (gains) losses, net			$ 1,526,000
Convertible Notes Due in 2019 [Member]
Debt Instrument [Line Items]
Convertible Debt			$ 22,323,000		$ 0
Maturity date			Dec. 30, 2019
Debt Instrument, Interest Rate, Stated Percentage			5.25%
Debt Instrument, Convertible, Conversion Price			$ 2.25
Convertible Debt, Principal Amount to be Received			$ 700
Debt Conversion, Original Debt, Amount			$ 1,483,000
Debt Conversion, Converted Instrument, Shares Issued		713	713
Gains (Losses) on Extinguishment of Debt		$ 589,000