Note 1. Basis of Presentation (Detail) - Basic Earnings (Loss) Per Share In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Weighted average shares which are not included in the calculation of diluted earnings (loss) per share because their impact is anti-dilutive:
Antidilutive shares	3,823	4,066	3,776	4,024
Stock Options [Member]
Weighted average shares which are not included in the calculation of diluted earnings (loss) per share because their impact is anti-dilutive:
Antidilutive shares	3,444	2,098	3,301	2,170
Restricted Stock [Member]
Weighted average shares which are not included in the calculation of diluted earnings (loss) per share because their impact is anti-dilutive:
Antidilutive shares	379	1,968	475	1,854

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

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