Note 5 - Stockholders' Equity

3 Months Ended

Mar. 31, 2013

Stockholders' Equity Note Disclosure [Text Block]

Note 5 — Stockholders’ Equity

The Company is authorized by the Board of Directors to acquire the Company’s stock through open market purchases under its share repurchase program. During the three months ended March 31, 2013, the Company repurchased 284,283 shares through open market purchases at an average cost of $78.15 per share for a total expenditure of $22,218. No share repurchases were made under the program during the three months ended March 31, 2012.  As of March 31, 2013, the Company had $18,735 in unused stock repurchase authority remaining under the Board approved program.  On April 23, 2013, the Board increased this remaining authority to $100,000.