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Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans - USD ($)
$ in Thousands
Jun. 30, 2015
Jun. 30, 2014
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets $ 242,076 $ 253,529
Cash and Cash Equivalents [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 4,051 3,078
Equity Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 101,725 107,498
US Government Agencies Debt Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 14,469 13,334
Corporate Bonds and Other Fixed Income Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 112,297 118,131
Other Debt Obligations [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 9,534 11,488
Fair Value, Inputs, Level 1 [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 24,405 24,338
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 451 287
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 17,716 16,754
Fair Value, Inputs, Level 1 [Member] | Corporate Bonds and Other Fixed Income Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 6,238 7,297
Fair Value, Inputs, Level 2 [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 217,671 229,191
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 3,600 2,791
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 84,009 90,744
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 14,469 13,334
Fair Value, Inputs, Level 2 [Member] | Corporate Bonds and Other Fixed Income Securities [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets 106,059 110,834
Fair Value, Inputs, Level 2 [Member] | Other Debt Obligations [Member]    
Note 17 - Employee Benefit Plans (Details) - Fair Values of Pension Plans [Line Items]    
Fair value of pension plan assets $ 9,534 $ 11,488