Note 1 - Interim Financial Statements	3 Months Ended
Mar. 31, 2017
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1. Interim Financial Statements Basis of Presentation These condensed Consolidated Financial Statements contain unaudited information as of March 31, 2017 and for the three months ended March 31, 2017 and 2016. The unaudited interim financial statements have been prepared pursuant to the rules and regulations for reporting on Form 10 -Q. Accordingly, certain disclosures required by accounting principles generally accepted in the United States of America for annual financial statements are not included herein. In management’s opinion, these unaudited financial statements reflect all adjustments (which include only normal recurring adjustments) necessary for a fair presentation of the information when read in conjunction with our 2016 audited Consolidated Financial Statements and the related notes thereto. The financial information as of December 31, 2016 is derived from our Annual Report on Form 10 -K filed with the Securities and Exchange Commission on February 28, 2017. The interim condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in our 2016 Annual Report on Form 10 -K. The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for the full year. Reclassifications Certain reclassifications of amounts previously reported have been made to the accompanying condensed Consolidated Financial Statements to maintain consistency and comparability between periods presented. This reclassification was related to our adoption of ASU 2016 - 09, "Compensation - Stock Compensation - Improvements to Employee Share-Based Payment Accounting." Specifically, we reclassified the presentation of excess tax benefits on our Consolidated Statements of Cash Flows and recorded reclassifications between additional paid-in capital and retained earnings. See also Note 11.

Note

Interim Financial Statements

Basis of Presentation

These condensed Consolidated Financial Statements contain unaudited information as of

March

31,

2017

and for the

three

months ended

March

31,

2017

and

2016.

The unaudited interim financial statements have been prepared pursuant to the rules and regulations for reporting on Form

-Q. Accordingly, certain disclosures required by accounting principles generally accepted in the United States of America for annual financial statements are not included herein. In management’s opinion, these unaudited financial statements reflect all adjustments (which include only normal recurring adjustments) necessary for a fair presentation of the information when read in conjunction with our

2016

audited Consolidated Financial Statements and the related notes thereto. The financial information as of

December

31,

2016

is derived from our Annual Report on Form

-K filed with the Securities and Exchange Commission on

February

28,

2017.

The interim condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in our

2016

Annual Report on Form

-K. The results of operations for the interim periods presented are not necessarily indicative of the results to be expected for the full year.

Reclassifications

Certain reclassifications of amounts previously reported have been made to the accompanying condensed Consolidated Financial Statements to maintain consistency and comparability between periods presented. This reclassification was related to our adoption of ASU

2016

09,

"Compensation - Stock Compensation - Improvements to Employee Share-Based Payment Accounting." Specifically, we reclassified the presentation of excess tax benefits on our Consolidated Statements of Cash Flows and recorded reclassifications between additional paid-in capital and retained earnings. See also Note

11.