Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	$ 109,326	$ 107,368
%	100.00%	100.00%
Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	1,416	79
Cash Equivalents [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	1,416	79
%	1.00%	0.00%
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	22,245	12,617
Fixed Income Securities [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	22,245	12,617
%	20.00%	12.00%
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	23,210	25,212
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	2,475	3,379
Equity Securities [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	25,685	28,591
%	24.00%	27.00%
Mutual and Pooled Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	28,357	34,627
Mutual and Pooled Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	19,476	24,204
Mutual and Pooled Funds [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	47,833	58,831
%	44.00%	54.00%
Equity Securities, Other [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	9,139	4,216
Equity Securities, Other [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	3,008	3,034
Equity Securities, Other [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	12,147	7,250
%	11.00%	7.00%
Fair Value, Inputs, Level 1 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	52,983	59,918
Fair Value, Inputs, Level 2 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	53,335	44,416
Fair Value, Inputs, Level 3 [Member]
Note 12 - Employee Benefit and Retirement Plans (Details) - Portfolio by Valuation Category [Line Items]
Fair value	$ 3,008	$ 3,034	$ 2,869