Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Net sales	$ 36,043	$ 33,335	$ 72,575	$ 61,409
Cost of goods sold	29,607	26,713	58,976	48,417
Gross profit	6,436	6,622	13,599	12,992
Selling, general and administrative	4,229	4,341	8,668	8,828
Income from operations	2,207	2,281	4,931	4,164
Other income (expense):
Interest income	529	304	1,084	554
Interest expense	(9)		(12)
Foreign exchange gain (loss)	37	(88)	(41)	(231)
Other, net	(14)	(14)	9	(13)
Total other income	543	202	1,040	310
Income before income taxes	2,750	2,483	5,971	4,474
Provision for income taxes	569	3,801	1,231	4,358
Net income (loss)	2,181	(1,318)	4,740	116
Unrealized gain (loss) resulting from change in fair value of derivative instruments, net of tax	852	(197)	1,235	(1,331)
Comprehensive income (loss)	$ 3,033	$ (1,515)	$ 5,975	$ (1,215)
Net income (loss) per common share:
Basic (in dollars per share)	$ 0.32	$ (0.20)	$ 0.70	$ 0.02
Diluted (in dollars per share)	$ 0.31	$ (0.20)	$ 0.68	$ 0.02
Weighted average common shares outstanding
Basic (in shares)	6,807,979	6,615,355	6,786,470	6,610,937
Diluted (in shares)	6,999,223	6,615,355	6,982,083	6,836,567