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Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2012

Basis of Presentation [Abstract]

Reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2012				2011				2012				2011
Weighted-average shares outstanding - basic			57,151				57,115				57,149				57,113
Shares underlying stock options and restricted stock			39				1				20				—
Weighted-average shares outstanding - diluted			57,190				57,116				57,169				57,113

Antidilutive securities excluded from computation of earnings per share

		Three Months Ended								Six Months Ended
		June 30,								June 30,
		2012				2011				2012				2011
Potentially dilutive common shares outstanding at end of period:
Shares underlying employee stock options			1,328				1,004				1,328				1,004
Restricted stock			442				33				442				33
Subtotal			1,770				1,037				1,770				1,037
Less dilutive common shares included in weighted-average shares outstanding - diluted			(39	)			(1	)			(20	)			—
Potentially dilutive common shares outstanding at end of period which were excluded from weighted-average shares outstanding - diluted			1,731				1,036				1,750				1,037

Accumulated other comprehensive loss

		June 30,				December 31,
		2012				2011
Accumulated balances of items included in accumulated other comprehensive loss:
Increase in pension liability		$	(26,889	)		$	(26,889	)
Income tax benefit			(10,487	)			(10,487	)
Accumulated other comprehensive loss		$	(16,402	)		$	(16,402	)

Property and equipment

		June 30, 2012				December 31, 2011				Estimated Useful Lives
Property and equipment:
Land		$	23,478			$	23,451
Buildings and improvements			53,785				53,322			7 to 40 years
Equipment			312,907				308,454			3 to 20 years
			390,170				385,227
Accumulated depreciation			(256,178	)			(248,128	)
Total property and equipment, net		$	133,992			$	137,099

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Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 13

-Subparagraph b

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

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Tabular disclosure of the components of accumulated other comprehensive income (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

-URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 40

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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