QUARTERLY RESULTS (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Jun. 30, 2018	[1]	Mar. 31, 2018	[1]	Dec. 31, 2017	[1]	Sep. 30, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2018		Jun. 30, 2017
Net Sales	$ 27,260		$ 22,200		$ 21,112		$ 21,174		$ 25,684		$ 20,807		$ 20,715		$ 20,168		$ 91,746	[2]	$ 87,374	[2]
Gross Profit	12,138		8,892		8,479		8,486		11,634		8,361		8,226		8,080		37,995		36,301
Operating Income	4,277		1,912		1,166		1,059		3,462		1,136		1,064		716		8,414		6,378
Net income	$ 3,697		$ 1,829		$ 1,233		$ 890		$ 3,222		$ 952		$ 857		$ 568		$ 7,649		$ 5,599
Net Income Per Share
Basic EPS	$ 0.20		$ 0.10		$ 0.07		$ 0.05		$ 0.17		$ 0.05		$ 0.05		$ 0.03		$ 0.41		$ 0.30
Diluted EPS	$ 0.20		$ 0.10		$ 0.07		$ 0.05		$ 0.17		$ 0.05		$ 0.05		$ 0.03		$ 0.41		$ 0.30

[1] Certain prior period balances have been reclassified to conform with the current period presentation.

[2] 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.