Note 11 - Employee Benefit and Retirement Plans (Detail) - Portfolio by valuation category (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Jun. 30, 2011
Fair value	$ 107,368	$ 108,547
%	100.00%	100.00%
Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	79	2,950
Cash Equivalents [Member]
Fair value	79	2,950
%	0.00%	3.00%
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	12,617	6,619
Fixed Income Securities [Member]
Fair value	12,617	6,619
%	12.00%	6.00%
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	25,212	41,657
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	3,379	2,542
Equity Securities [Member]
Fair value	28,591	44,199
%	27.00%	41.00%
Mutual and Pooled Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	34,627	23,821
Mutual and Pooled Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	30,462	29,758
Mutual and Pooled Funds [Member]
Fair value	65,089	53,579
%	60.00%	49.00%
Equity Securities, Other [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	992	1,200
Equity Securities, Other [Member]
Fair value	992	1,200
%	1.00%	1.00%
Fair Value, Inputs, Level 1 [Member]
Fair value	59,918	68,428
Fair Value, Inputs, Level 2 [Member]
Fair value	$ 47,450	$ 40,119