Equity Incentive Plans (Schedule of Stock-option Expense to be Recognized in the Future) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Share-based Compensation [Abstract]
Stock option expense to be recognized in 2015	$ 1,125
Stock option expense to be recognized in 2016	824
Stock option expense to be recognized in 2017	477
Stock option expense to be recognized in 2018	0
Total Compensation Cost To Be Recognized, Stock Options	$ 2,426

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Share-based Compensation, Stock Option Expense, Recognized in Year Three

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Share-based Compensation, Stock Option Expense, Recognized in Year Two

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Share-based Compensation, Stock Option Expense, To Be Recognized in One Year

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Unrecognized cost of unvested options awarded to employees as compensation.

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