Equity (Details 5) shares in Thousands	May 19, 2016 $ / shares shares
Shares Outstanding at Conversion Date	35,731
Convertible Preferred Stock, Shares Issued upon Conversion	3,652
Series A Preferred Stock [Member]
Old Conversion Price | $ / shares	$ 175.00
Adjusted Conversion Price | $ / shares	$ 19.44
Shares Outstanding at Conversion Date	976
Convertible Preferred Stock, Shares Issued upon Conversion	50
Series B Preferred Stock [Member]
Old Conversion Price | $ / shares	$ 54.13
Adjusted Conversion Price | $ / shares	$ 12.96
Shares Outstanding at Conversion Date	14,042
Convertible Preferred Stock, Shares Issued upon Conversion	1,083
Series C Preferred Stock [Member]
Old Conversion Price | $ / shares	$ 28.13
Adjusted Conversion Price | $ / shares	$ 9.71
Shares Outstanding at Conversion Date	5,702
Convertible Preferred Stock, Shares Issued upon Conversion	587
Series D One Preferred Stock [Member]
Old Conversion Price | $ / shares	$ 28.13
Adjusted Conversion Price | $ / shares	$ 7.24
Shares Outstanding at Conversion Date	8,386
Convertible Preferred Stock, Shares Issued upon Conversion	1,159
Series D Two Preferred Stock [Member]
Old Conversion Price | $ / shares	$ 62.50
Adjusted Conversion Price | $ / shares	$ 8.58
Shares Outstanding at Conversion Date	6,625
Convertible Preferred Stock, Shares Issued upon Conversion	773