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Stock Option Plan (Summary Of Stock Option Activity) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Stock Option Plan [Abstract]
Options outstanding, January 1, 2016, Shares	636
Options outstanding, Granted, Shares
Options, Outstanding, Exercised, Shares
Options outstanding, forfeited, Shares
Options outstanding, December 31, 2016, Shares	636
Options exercisable, December 31, 2016, Shares	636
Options outstanding, January 1, 2016, Weighted Average Exercise Price | $ / shares	$ 12.79
Options outstanding, December 31, 2016, Weighted Average Exercise Price | $ / shares	12.79
Options exercisable, December 31, 2016, Weighted Average Exercise Price | $ / shares	$ 12.79
Options outstanding, December 31, 2016, Weighted Average Remaining Contractual Life (in years)	1 year 5 months 1 day
Options exercisable, December 31, 2016, Weighted Average Remaining Contractual Life (in years)	1 year 5 months 1 day
Options outstanding, December 31, 2016, Intrinsic Value | $	$ 2
Options exercisable, December 31, 2016, Intrinsic Value | $	$ 2

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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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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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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Gross 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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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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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 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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