Note 1. Basis of Presentation (Detail) - Basic Earnings (Loss) Per Share In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Weighted average shares which are not included in the calculation of diluted earnings (loss) per share because their impact is anti-dilutive:
Antidilutive shares	3,123	3,730
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	3,003	3,174
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	120	556

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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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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