Note 6 - Employee Benefit and Retirement Plans (Tables)

3 Months Ended

Sep. 30, 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
	9/30/2013			9/30/2012
Service cost	$	709		$	738
Interest cost		1,715			1,494
Expected return on plan assets		(1,562	)		(1,602	)
Amortization of prior service cost		29			59
Amortization of net loss		3			-
	$	894		$	689

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
	9/30/2013			9/30/2012
Service cost	$	88		$	128
Interest cost		133			136
Amortization of prior service credit		(126	)		(279	)
Amortization of accumulated loss		-			40
	$	95		$	25