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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Stockholders' Equity

Common Stock												Treasury Stock
(number of shares in thousands)		2015				2014				2013				2015				2014				2013
At January 1			29,555				29,555				29,555				5,263				5,208				6,222
Exercise of options			0				0				0				(152	)			(105	)			(632	)
Acquisition-related stock issued			0				0				0				0				0				(471	)
Stock purchases			0				0				0				342				160				89
At December 31			29,555				29,555				29,555				5,453				5,263				5,208

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- References

No definition available.

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- Definition

Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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