Equity (Details 2) - USD ($) shares in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Summary of stock options outstanding
Stock Options Outstanding, Beginning Balance	82	57
Stock Options, Granted		29
Stock Options, Exercised
Stock Options, Forfeited, or expired	(8)	(1)
Stock Options Outstanding, Ending Balance	74	85
Stock Options, Vested and expected to vest at ending balance	72	83
Options exercisable	58	52
Weighted Average Exercise Price, Beginning Period	$ 45.35	$ 56.13
Weighted Average Exercise Price, Granted		28.13
Weighted Average Exercise Price, Forfeited, or expired	42.16	37.50
Weighted Average Exercise Price, Ending Period	45.71	46.75
Weighted Average Exercise Price, Vested and expected to vest at ending balance	46.22	37.50
Weighted Average Exercise Price, Exercisable at ending balance	$ 51.10	$ 56.00
Weighted Average Remaining Contractual Term, ending balance	3 years 7 months 24 days	4 years 7 months 24 days
Weighted Average Remaining Contractual Term, vested and expected to vest at ending balance	3 years 1 month 6 days	3 years 2 months 26 days
Weighted Average Remaining Contractual Term, excercisable at ending balance	3 years 1 month 6 days	3 years 6 months 21 days
Aggregate Intrinsic Value, Beginning Balance
Aggregate Intrinsic Value, Granted
Aggregate Intrinsic Value, Exercised
Aggregate Intrinsic Value, Forfeited or expired
Aggregate Intrinsic Value, Ending Balance
Aggregate Intrinsic Value, Vested and expected to vest at ending balance
Aggregate Intrinsic Value, Exercisable at ending balance