Stockholders' Equity (Summary of Option activity under the Stock Option Plan) (Details) - Stock Option Plan [Member] - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2015 USD ($) $ / shares shares
Shares:
Outstanding, beginning \| shares	308
Exercised \| shares	(286)
Expired \| shares	(3)
Outstanding, ending \| shares	19
Exercisable \| shares	19
Weighted Average Exercise Price
Oustanding, beginning (USD per share) \| $ / shares	$ 6.86
Exercised (USD per share) \| $ / shares	6.56
Expired (USD per share) \| $ / shares	7.51
Oustanding, ending (USD per share) \| $ / shares	11.35
Exercisable (USD per share) \| $ / shares	$ 11.35
Outstanding, Weighted Average Contractual Term	1 year
Exercisable, Weighted Average Contractual Term	1 year
Outstanding, Aggregate Intrinsic Value \| $	$ 160
Exercisable, Aggregate Intrinsic Value \| $	$ 160

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(4)
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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 price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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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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-Publisher SEC
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