Note 11 - Stock Repurchase Program	9 Months Ended
Sep. 30, 2013
Disclosure Text Block Supplement [Abstract]
Treasury Stock [Text Block]	11. Stock Repurchase Program In July 2013, the Board of Directors approved a stock repurchase program that authorizes the Company to repurchase up to $100.0 million in the aggregate of its common stock from August 9, 2013 to June 30, 2015. All shares are retired upon repurchase. For the three months ended September 30, 2013, the Company repurchased 268,000 shares for $8.0 million, at an average price of $29.75 per share. As of September 30, 2013, $92.0 million remained available for future repurchases under the program.

Note 11 - Stock Repurchase Program

9 Months Ended

Sep. 30, 2013

Disclosure Text Block Supplement [Abstract]

11. Stock Repurchase Program

In July 2013, the Board of Directors approved a stock repurchase program that authorizes the Company to repurchase up to $100.0 million in the aggregate of its common stock from August 9, 2013 to June 30, 2015. All shares are retired upon repurchase. For the three months ended September 30, 2013, the Company repurchased 268,000 shares for $8.0 million, at an average price of $29.75 per share. As of September 30, 2013, $92.0 million remained available for future repurchases under the program.