Note 6 - Pension and Post-retirement Benefits (Tables)

9 Months Ended

Mar. 31, 2014

Pension Plan, Defined Benefit [Member]

Note 6 - Pension and Post-retirement Benefits (Tables) [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	3/31/2014			3/31/2013			3/31/2014			3/31/2013
Service cost	$	716		$	734		$	2,139		$	2,210
Interest cost		1,746			1,477			5,197			4,464
Expected return on plan assets		(1,589	)		(1,490	)		(4,732	)		(4,497	)
Amortization of prior service cost		29			59			87			176
Amortization of net gain		2			-			8			-
	$	904		$	780		$	2,699		$	2,353

Postretirement Medical and Life Insurance Plan [Member]

Note 6 - Pension and Post-retirement Benefits (Tables) [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	3/31/2014			3/31/2013			3/31/2014			3/31/2013
Service cost	$	25		$	127		$	202		$	383
Interest cost		66			136			331			409
Amortization of prior service credit		(260	)		(185	)		(511	)		(557	)
Amortization of accumulated loss		(1	)		40			(1	)		119
	$	(170	)	$	118		$	21		$	354