Shareholders' Equity And Stock-Based Compensation (Summary Of Stock Option Activity) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Shareholders' Equity and Stock-Based Compensation [Abstract]
Number of Shares, Outstanding	1,313
Number of Shares, Options granted	128
Number of Shares, Options exercised	(11)
Number of Shares, Outstanding	1,430
Number of Shares, Exercisable	1,082
Number of Shares, Available for future grant at December 31, 2014	175
Number of Shares, Available for future grant at March 31, 2015	50
Weighted-average Exercise Price, Outstanding	$ 5.86
Weighted-average Exercise Price, Options granted	$ 6.87
Weighted-average Exercise Price, Options exercised	$ 3.52
Weighted-average Exercise Price, Outstanding	$ 5.97
Weighted-average Exercise Price, Exercisable	$ 6.06
Aggregate Intrinsic Value, Outstanding at March 31, 2015	$ 3,836
Aggregate Intrinsic Value, Exercisable	$ 3,031

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Net number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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