Note 1. Basis of Presentation (Detail) - Basic Earnings (Loss) Per Share In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 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	3,775	502	3,753	2,152
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	3,286	391	3,230	1,881
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	489	111	523	271

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

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