Note 7 - Stockholders' Equity (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012
Treasury Stock, Shares, Acquired	39,000
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$ 9.91
Treasury Stock, Value, Acquired, Cost Method (in Dollars)	$ 387,000
Recovered Shares	67,000
Recovered Value (in Dollars)	$ 897,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	45,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	5,000