Note 6 - Accounting for Share-based Payment Arrangement Compensation	3 Months Ended
Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	(6) Accounting for Share-based Payment Arrangement Compensation We account for share-based payment arrangements in accordance with Financial Accounting Standards Board Accounting Standards Codification, or FASB ASC, 718, Compensation – Stock Compensation. During the first three months of 2013, there were no significant changes to the structure of our stock-based award plans. Pre-tax compensation expense related to stock options and performance unit awards recorded in the first three months of 2013 and 2012 was $217,000 and $248,000, respectively. See Note 9 to our consolidated financial statements in our 2012 Annual Report on Form 10-K for a detailed description of stock-based awards under our 2005 Stock Incentive Plan and 1995 Stock Incentive Plan.

Note 6 - Accounting for Share-based Payment Arrangement Compensation

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

(6) Accounting for Share-based Payment Arrangement Compensation

We account for share-based payment arrangements in accordance with Financial Accounting Standards Board Accounting Standards Codification, or FASB ASC, 718, Compensation – Stock Compensation. During the first three months of 2013, there were no significant changes to the structure of our stock-based award plans. Pre-tax compensation expense related to stock options and performance unit awards recorded in the first three months of 2013 and 2012 was $217,000 and $248,000, respectively. See Note 9 to our consolidated financial statements in our 2012 Annual Report on Form 10-K for a detailed description of stock-based awards under our 2005 Stock Incentive Plan and 1995 Stock Incentive Plan.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 50

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 93-6

-Paragraph 53

-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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 40

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64, 65, A240

-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 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

+ Details