Note 6 - Stockholders' Equity and Equity Compensation (Detail) - Additional Stock Option Information (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Amount collected from stock option exercises	$ 0.4	$ 2.0
Total intrinsic value of stock option exercises	0.1	1.0
Tax benefit of stock option exercises recorded in additional paid-in-capital	0.1	0.1
Aggregate intrinsic value of outstanding stock options at June 30, 2012	2.3	4.3
Aggregate intrinsic value of exercisable stock options at June 30, 2012	$ 2.3	$ 3.5

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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

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

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-Name Accounting Standards Codification

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

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

Reference 6: http://www.xbrl.org/2003/role/presentationRef

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+ Details