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

9 Months Ended

Mar. 31, 2015

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	3/31/2015 (Unaudited)			3/31/2014			3/31/2015 (Unaudited)			3/31/2014
Service cost	$	694		$	716		$	2,081		$	2,139
Interest cost		1,673			1,746			5,085			5,197
Expected return on plan assets		(1,724	)		(1,589	)		(5,236	)		(4,732	)
Amortization of prior service cost		-			29			-			87
Amortization of net gain		7			2			23			8
	$	650		$	904		$	1,953		$	2,699

Post Retirement Medical and Life Insurance Plan [Member]

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine months Ended
	3/31/2015 (Unaudited)			3/31/2014			3/31/2015 (Unaudited)			3/31/2014
Service cost	$	29		$	25		$	85		$	202
Interest cost		61			66			183			331
Amortization of prior service credit		(200	)		(260	)		(599	)		(511	)
Amortization of accumulated loss		-			(1	)		-			(1	)
	$	(110	)	$	(170	)	$	(331	)	$	21