Note 6 - Employee Benefit and Retirement Plans (Tables)

6 Months Ended

Dec. 31, 2013

Pension Plan, Defined Benefit [Member]

Note 6 - Employee Benefit and Retirement Plans (Tables) [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Six Months Ended
	12/31/2013			12/31/2012			12/31/2013			12/31/2012
Service cost	$	714		$	738		$	1,423		$	1,476
Interest cost		1,736			1,493			3,451			2,987
Expected return on plan assets		(1,581	)		(1,406	)		(3,143	)		(3,008	)
Amortization of prior service cost		29			58			58			117
Amortization of net gain		3			-			6			-
	$	901		$	883		$	1,795		$	1,572

Postretirement Medical and Life Insurance Plan [Member]

Note 6 - Employee Benefit and Retirement Plans (Tables) [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Six Months Ended
	12/31/2013			12/31/2012			12/31/2013			12/31/2012
Service cost	$	89		$	128		$	177		$	256
Interest cost		132			137			265			273
Amortization of prior service credit		(125	)		(93	)		(251	)		(372	)
Amortization of accumulated loss		-			39			-			79
	$	96		$	211		$	191		$	236