Geographical Data (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Net Sales	[1]	$ 20,807	$ 19,808	$ 61,690	$ 58,454
Total Identifiable Assets		66,005		66,005		$ 64,769
Domestic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	20,059	19,229	59,652	56,515
Foreign [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	748	$ 579	2,038	$ 1,939
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Identifiable Assets		50,081		50,081		51,272
Dominican Republic [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Identifiable Assets	[2]	$ 15,924		$ 15,924		$ 13,497

[1] All of the Company's sales originate in the United States and are shipped primarily from the Company's facilities in the United States. There were no sales into any one foreign country in excess of 10% of total Net Sales.

[2] Consists primarily of inventories (March 31, 2017 = $12,371, June 30, 2016 = $10,076) and fixed assets (March 31, 2017 = $3,331, June 30, 2016 = $3,311) located at the Company's principal manufacturing facility in the Dominican Republic.