Equity Incentive Plans (Schedule of Stock-option Expense to be Recognized in the Future) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Share-based Compensation [Abstract]
Stock option expense to be recognized in 2012	$ 542
Stock option expense to be recognized in 2013	221
Stock option expense to be recognized in 2014	151
Total Compensation Cost To Be Recognized, Stock Options	$ 914