Note 7 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Amortized intangible assets, gross	$ 54,625	$ 54,625
Accumulated amortization	24,018	22,638
Amortized intangible assets, net	30,607	31,987
Indefinite-lived intangible assets, gross	3,422	3,422
Total other intangible assets, gross	58,047	58,047
Total other intangible assets, net	34,029	35,409
Trademarks and Trade Names [Member]
Indefinite-lived intangible assets, gross	3,422	3,422
Customer Relationships [Member]
Amortized intangible assets, gross	35,563	35,563
Accumulated amortization	11,040	10,011
Amortized intangible assets, net	24,523	25,552
Patents [Member]
Amortized intangible assets, gross	338	338
Accumulated amortization	231	217
Amortized intangible assets, net	107	121
Technology-Based Intangible Assets [Member]
Amortized intangible assets, gross	16,066	16,066
Accumulated amortization	12,083	11,801
Amortized intangible assets, net	3,983	4,265
Trade Names [Member]
Amortized intangible assets, gross	2,658	2,658
Accumulated amortization	664	609
Amortized intangible assets, net	$ 1,994	$ 2,049