Note 13 - Benefit Plans (Details) (USD $)	0 Months Ended	1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 02, 2013	Apr. 30, 2013	Jan. 31, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Note 13 - Benefit Plans (Details) [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount				$ 0	$ 0	$ 0	$ 0
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount	0.10
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	6.00%
Criteria For Defined Benefit Pension Plan						twelve
Attainable Age For Continuous Servicing In Defined Pension Plan						21 years
Defined Benefit Pension Plan, Liabilities				4,000,000		4,000,000
Defined Benefit Plan, Fair Value of Plan Assets				14,999,000		14,999,000		14,540,000
Defined Contribution Plan Employer Final Contribution Amount			163,000
Defined Benefit Plan, Contributions by Employer		187,000
Cash Surrender Value of Life Insurance				$ 1,600,000		$ 1,600,000
Common Stock [Member]
Note 13 - Benefit Plans (Details) [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Redemption Restriction, Percentage				0.30%		0.30%		0.20%