Note 17 - Financial Information by Segment and Geographic Area - Summary of Financial Results for Reportable Segments (Details) - USD ($)		3 Months Ended								12 Months Ended
		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
Revenues, Total		$ 61,091,000	$ 58,498,000	$ 56,532,000	$ 51,901,000	$ 57,552,000	$ 54,834,000	$ 52,124,000	$ 51,818,000	$ 228,022,000	[1]	$ 216,328,000	[2]	$ 207,023,000	[3]
Operating income										11,221,000		5,518,000		(147,000)
Capital expenditures and software development										7,227,000		5,762,000		5,836,000
Depreciation and amortization										7,338,000		7,511,000		7,026,000
Current assets	[4]	119,975,000				113,228,000				119,975,000		113,228,000		110,123,000
Long-lived assets	[5]	70,112,000				69,058,000				70,112,000		69,058,000		82,542,000
Restructuring charges														(988,000)
North American Segment [Member]
Revenues, Total										136,387,000	[1]	128,442,000	[2]	124,606,000	[3]
Operating income										9,468,000				6,910,000
Capital expenditures and software development										3,617,000		3,426,000		2,765,000
Depreciation and amortization										5,022,000		4,923,000		4,551,000
Current assets	[4]	41,188,000				37,546,000				41,188,000		37,546,000		33,555,000
Long-lived assets	[5]	35,638,000				37,489,000				35,638,000		37,489,000		39,199,000
Restructuring charges														(82,000)
International Segment [Member]
Revenues, Total										91,635,000	[1]	87,886,000	[2]	82,417,000	[3]
Operating income										8,043,000				393,000
Capital expenditures and software development										3,610,000		2,336,000		3,071,000
Depreciation and amortization										2,316,000		2,588,000		2,475,000
Current assets	[4]	63,205,000				60,855,000				63,205,000		60,855,000		61,961,000
Long-lived assets	[5]	14,168,000				13,010,000				14,168,000		13,010,000		14,684,000
Restructuring charges														(906,000)
Unallocated [Member]
Revenues, Total											[1]		[2]		[3]
Operating income										(6,290,000)				(7,450,000)
Capital expenditures and software development
Depreciation and amortization
Current assets	[4]	15,582,000				14,827,000				15,582,000		14,827,000		14,607,000
Long-lived assets	[5]	$ 20,306,000				$ 18,559,000				$ 20,306,000		$ 18,559,000		28,659,000
Restructuring charges

[1] Excludes $4,879 of North American segment intercompany sales to the International segment and $16,187 intercompany sales of the International segment to the North American segment.

[2] Excludes $6,468 of North American segment intercompany sales to the International segment and $14,239 intercompany sales of the International segment to the North American segment.

[3] Excludes $7,902 of North American segment intercompany sales to the International segment and $11,677 intercompany sales of the International segment to the North American segment.

[4] Current assets primarily consist of accounts receivable, inventories and prepaid expenses. Assets not allocated to the segments include cash and cash equivalents.

[5] Long lived assets consist of property, plant and equipment, net taxes receivable, deferred tax assets, net intangible assets and goodwill.