Share-Based Payment Arrangements (Summary of the Status of Stock Options) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
Sep. 30, 2013	Dec. 31, 2012
Share-Based Payment Arrangements [Abstract]
Stock Options, Outstanding at January 1, 2013	1,404,989
Stock Options, Granted		0
Stock Options, Exercised
Stock Options, Forfeited or expired	(13,214)
Stock Options, Outstanding at September 30, 2013	1,391,775	1,404,989
Stock Options, Exercisable at September 30, 2013	1,189,036
Weighted Average Exercise Price, Outstanding at January 1, 2013	$ 9.63
Weighted Average Exercise Price, Forfeited or expired	$ 7.90
Weighted Average Exercise Price, Outstanding at September 30, 2013	$ 9.65	$ 9.63
Weighted Average Exercise Price, Exercisable at September 30, 2013	$ 10.17
Average Remaining Contractual Term, Outstanding at September 30, 2013	4 years 6 months
Average Remaining Contractual Term, Exercisable at September 30, 2013	4 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding at September 30, 2013	$ 1,327
Aggregate Intrinsic Value, Exercisable at September 30, 2013	$ 870

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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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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price of options that were either forfeited or expired.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to 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 of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including 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 remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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