Equity (Details 7) shares in Thousands	3 Months Ended
	Mar. 31, 2016 $ / shares shares	Mar. 31, 2015 $ / shares shares
Class Of Warrant Or Right Number Of Warrants Or Rights Roll Forward
Number of Warrants Outstanding at beginning of period | shares	206	171
Number of warrants issued | shares		22
Number Of Warrants Or Rights Expired | shares		(9)
Number of Warrants Outstanding at end of period | shares	206
Number of Warrants Or Rights Exercisable at end of period | shares	206	184
Excercise Price of Warrants Outstanding at beginning of period | $ / shares	$ 28.70	$ 36.13
Exercise Price Of Warrants Issued | $ / shares		28.13
Exercise Price Of Warrants Expired | $ / shares
Excercise Price of Warrants Outstanding at end of period | $ / shares	$ 28.70	$ 34.63
Exercise Price Of WarrantsExercisable at end of period | $ / shares	28.70	34.63