Note 3 - Revenue From Contracts With Customers - Effects on Financial Statements (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	Jul. 01, 2018	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Net sales										$ 791,579	$ 770,452	$ 647,885
Cost of Sales										523,519	500,850	432,332
Income tax expense										18,424	38,904	11,822
Net Loss		$ 12,390	$ 26,269	$ 13,398	$ 15,857	$ 12,612	$ 12,800	$ (2,806)	$ 13,998	67,914	36,604	46,545
Inventories	$ 126,649	88,645				104,300				88,645	104,300
Accounts receivable	134,931	119,589				119,783				119,589	119,783
Accrued liabilities	67,077	62,648				57,679				62,648	57,679
Deferred income taxes	26,476	22,824				26,816				22,824	26,816
Retained earnings	760,397	818,282				761,430				818,282	761,430
Gross profit		70,082	$ 61,790	$ 66,936	$ 69,252	74,502	$ 66,112	$ 63,317	$ 65,671	268,060	269,602	215,553
Income from continuing operations										47,189	31,343	39,137
Income (loss) from discontinued operations, net of income taxes										20,725	5,261	$ 7,408
Prepaid Expenses		30,872				10,255				30,872	10,255
Income taxes payable		5,744				6,050				5,744	6,050
Previously Reported [Member]
Inventories						127,223					127,223
Accounts receivable						134,228					134,228
Accrued liabilities						65,575					65,575
Deferred income taxes						26,816					26,816
Retained earnings						$ 761,430					$ 761,430
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Net sales										782,955
Cost of Sales										517,540
Income tax expense										17,774
Net Loss										66,114
Inventories		94,624								94,624
Retained earnings		816,482								816,482
Gross profit										265,415
Income from continuing operations										45,194
Income (loss) from discontinued operations, net of income taxes										20,920
Prepaid Expenses		22,248								22,248
Income taxes payable		5,094								5,094
Accounting Standards Update 2014-09 [Member]
Net sales	(799)
Cost of Sales	(574)
Income tax expense	340
Net Loss	(1,033)
Retained earnings	(1,000)
Accounting Standards Update 2014-09 [Member] | Restatement Adjustment [Member]
Inventories	(574)
Accounts receivable	703
Accrued liabilities	1,502
Deferred income taxes	(340)
Retained earnings	$ (1,033)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Net sales										(8,624)
Cost of Sales										(5,979)
Income tax expense										(650)
Net Loss										(1,800)
Inventories		5,979								5,979
Retained earnings		(1,800)								(1,800)
Gross profit										(2,645)
Income from continuing operations										(1,995)
Income (loss) from discontinued operations, net of income taxes										195
Prepaid Expenses		(8,624)								(8,624)
Income taxes payable		$ (650)								$ (650)