Note 7 - Stockholders' Equity (Detail) (USD $)	9 Months Ended
	Sep. 30, 2012
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures (in Dollars)	$ 485,000
Shares Paid for Tax Withholding for Share Based Compensation	7,000
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
Stock Issued During Period, Shares, Treasury Stock Reissued	6,000
Stock Issued During Period, Value, Treasury Stock Reissued (in Dollars)	85,000
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	157,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	39,000