Summary Of Significant Accounting Policies (Tables)

9 Months Ended

Mar. 31, 2017

Accounting Policies [Abstract]

Schedule Of Construction In Progress In Accounts Payable

Purchases of property, plant and equipment included in Accounts Payable and excluded from the property additions and the change in accounts payable in the Condensed Consolidated Statements of Cash Flows were as follows:

	March 31,
	2017		2016
Construction in progress in Accounts Payable	$	1,887	$	185

Schedule Of Basic And Diluted Net Income Per Common Share Calculations

Basic and diluted net income per common share were calculated as follows:

	Three Months Ended   March 31,						Nine Months Ended   March 31,
	2017			2016			2017			2016
Net income	$	14,471		$	29,011		$	86,827		$	91,150
Net income available to participating securities	(23		)	(54		)	(149		)	(216		)
Net income available to common shareholders	$	14,448		$	28,957		$	86,678		$	90,934
Weighted average common shares outstanding – basic	27,379			27,338			27,369			27,329
Incremental share effect from:
Nonparticipating restricted stock	1			2			3			3
Stock-settled stock appreciation rights	62			36			66			33
Weighted average common shares outstanding – diluted	27,442			27,376			27,438			27,365
Net income per common share – basic	$	0.53		$	1.06		$	3.17		$	3.33
Net income per common share – diluted	$	0.53		$	1.06		$	3.16		$	3.32

Schedule Of Amounts Reclassified Out Of Accumulated Other Comprehensive Loss

The following table presents the amounts reclassified out of accumulated other comprehensive loss by component:

	Three Months Ended   March 31,						Nine Months Ended   March 31,
	2017			2016			2017			2016
Accumulated other comprehensive loss at beginning of period	$	(11,194	)	$	(8,631	)	$	(11,350	)	$	(10,057	)
Defined Benefit Pension Plan Items:
Amortization of unrecognized net loss	179			135			536			405
Postretirement Benefit Plan Items:
Prior service credit arising during the period	—			—			—			2,038
Amortization of unrecognized net gain	(9		)	(11		)	(28		)	(23		)
Amortization of prior service credit	(46		)	(47		)	(136		)	(79		)
Total other comprehensive income, before tax	124			77			372			2,341
Total tax expense	(46		)	(28		)	(138		)	(866		)
Other comprehensive income, net of tax	78			49			234			1,475
Accumulated other comprehensive loss at end of period	$	(11,116	)	$	(8,582	)	$	(11,116	)	$	(8,582	)