Note 6 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Amortized intangible assets, gross	$ 55,335	$ 55,335
Accumulated amortization	23,348	20,588
Amortized intangible assets, net	31,987	34,747
Indefinite-lived intangible assets, gross	3,422	3,422
Total other intangible assets, gross	58,757	58,757
Other Intangible Assets, net	35,409	38,169
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	10,011	7,956
Amortized intangible assets, net	25,552	27,607
Patents [Member]
Amortized intangible assets, gross	338	338
Accumulated amortization	217	186
Amortized intangible assets, net	121	152
Technology-Based Intangible Assets [Member]
Amortized intangible assets, gross	16,066	16,066
Accumulated amortization	11,801	11,237
Amortized intangible assets, net	4,265	4,829
Trade Names [Member]
Amortized intangible assets, gross	2,658	2,658
Accumulated amortization	609	499
Amortized intangible assets, net	2,049	2,159
Noncompete Agreements [Member]
Amortized intangible assets, gross	710	710
Accumulated amortization	710	710
Amortized intangible assets, net