Employee Share Plans (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Stock award activity
Outstanding at Dec 31, 2011, Number of Options	6,825
Granted, Number of Options	1,465
Exercised, Number of Options	0
Expired or canceled, Number of Options	(749)
Outstanding at Dec 31, 2012 , Number of Options	7,541
Vested and exercisable at Dec 31, 2012	3,965
Outstanding at beginning of year, Weighted Average Exercise Price Per Share	$ 7.54
Granted, Weighted Average Exercise Price Per Share	$ 5.87
Exercised or released, Weighted Average Exercise Price Per Share
Expired or canceled, Weighted Average Exercise Price Per Share	$ 7.87
Outstanding at December 31, 2012, Weighted Average Exercise Price Per Share	$ 7.18
Vested and exercisable, Weighted Average Exercise Price at Dec 31, 2012	$ 7.64
Weighted Average Remaining Contractual Term , Outstanding	3 years 1 month 13 days
Weighted Average Remaining Contractual Term , Vested and Exercisable at Dec 31, 2012	1 year 11 months 27 days
Aggregate Intrinsic value, Outstanding Beginning Balance
Aggregate Intrinsic value, Granted
Aggregate Intrinsic value, Exercised
Aggregate Intrinsic value, Expired or canceled
Aggregate Intrinsic value, Outstanding Ending Balance
Aggregate Intrinsic value, Vested and exercisable at Dec 31, 2012