Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
OPERATING ACTIVITIES:
Net income (loss)	$ 18,073	$ 16,518
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	5,528	3,362
Deferred income taxes	1,764	119
Stock-based compensation expense	1,024	1,595
Excess tax benefit from stock-based payment arrangements	(1,193)	41
Provision for losses on accounts receivable	15	(7)
Gain on disposition of capital assets	15	(113)
Gain on sale of investments	(346)
Changes in operating assets and liabilities:
Trade receivables	(238)	(8,145)
Inventories	16,523	(10,172)
Other current assets	(5,875)	(1,125)
Other assets	22	(102)
Accounts payable - trade	(4,651)	4,830
Accrued liabilities	926	(1,094)
Other long-term liabilities	418	382
Supplemental retirement plans	86	(24)
Net cash provided by (used in) operating activities	32,091	6,065
INVESTING ACTIVITIES:
Purchases of investments	(2,304)	(1,855)
Proceeds from sales of investments	2,107	1,526
Proceeds from sale of capital assets	27	124
Proceeds from life insurance policies	2,836
Capital expenditures	(7,116)	(33,752)
Net cash (used in) provided by investing activities	(4,450)	(33,957)
FINANCING ACTIVITIES:
Dividends paid	(4,077)	(3,778)
Repayments of short-term debt	$ (11,904)
Proceeds from long-term debt, net		14,745
Proceeds from issuance of common stock	$ 1,403	518
Proceeds from issuance of shares under incentive and share-based compensation plans, excluding stock options	(164)
Excess tax benefit from stock-based payment arrangements	1,193	(41)
Net cash (used in) provided by financing activities	(13,549)	11,444
Increase (decrease) in cash and cash equivalents	14,092	(16,448)
Cash and cash equivalents at beginning of year	1,282	22,176
Cash and cash equivalents at end of year	15,374	5,728
SUPPLEMENTAL INFORMATION CASH PAID DURING THE PERIOD FOR:
Income taxes paid (refunded)	7,460	9,810
Capital expenditures in accounts payable	4	1,852
Interest	$ 69	$ 89