Note 5 - Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2013

Stockholders' Equity Note Disclosure [Text Block]

Class of Treasury Stock [Table Text Block]

Repurchase of Equity Securities
Period	Total Number of Common Shares Repurchased		Average Price Paid Per Common Share		Total Number of Common Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Number (or Approximate Dollar Value) of Common Shares that May Yet Be Purchased Under the Plans or Programs
							(in thousands)
January 1 - 31		215,746	$	34.65		251,146	$	91,319
February 1 - 28		102,473	$	37.73		353,619	$	87,450
March 1 - 31		20,000	$	35.27		373,619	$	86,745
April 1 - 30		-		-		-	$	86,745
May 1 - 31		-		-		-	$	86,745
June 1 - 30		-		-		-	$	86,745

Schedule of Dividends Payable [Table Text Block]

	Six Months Ended June 30, 2013		Six Months Ended June 30, 2012		Quarter Ended June 30, 2013		Quarter Ended June 30, 2012
Dividends Declared (in thousands)	$	13,184	$	-	$	6,622	$	-
Dividend per share	$	0.50	$	-	$	0.25	$	-