Business Segments - Operating Results and Other Financial Information by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012
Operating Statistics [Line Items]
Sales	$ 65,979	$ 55,370	$ 114,999	$ 107,203
Gross profit	11,408	8,736	18,621	17,080
Operating income (loss)	3,513	2,919	4,857	5,308
Selling and administrative expenses	7,375	5,535	12,847	10,946
Internal research and development expenses	243	218	548	616
Restructuring/impairment charges		(59)		(59)
Depreciation/amortization	993	426	1,472	831
Capital expenditures	544	1,186	1,602	1,917
Total assets	161,094		161,094		144,555	[1]
Medical [Member]
Operating Statistics [Line Items]
Sales	34,804	28,027	62,863	55,487
Gross profit	4,344	3,883	8,538	7,497
Operating income (loss)	1,803	2,332	4,425	4,219
Selling and administrative expenses	2,268	1,471	3,738	3,087
Restructuring/impairment charges		(30)		(30)
Depreciation/amortization	634	178	807	347
Capital expenditures	335	214	344	233
Total assets	97,695		97,695		51,211
CS [Member]
Operating Statistics [Line Items]
Sales	14,059	12,549	26,406	25,109
Gross profit	1,428	1,306	2,524	2,394
Operating income (loss)	777	600	1,163	943
Selling and administrative expenses	651	706	1,361	1,451
Depreciation/amortization	148	134	291	264
Capital expenditures	20	62	726	202
Total assets	25,852		25,852		24,590
DSS [Member]
Operating Statistics [Line Items]
Sales	21,402	18,476	34,608	33,763
Gross profit	5,636	3,547	7,559	7,189
Operating income (loss)	4,143	2,404	4,681	4,645
Selling and administrative expenses	1,250	925	2,330	1,928
Internal research and development expenses	243	218	548	616
Depreciation/amortization	153	101	297	195
Capital expenditures	132	532	256	567
Total assets	17,220		17,220		10,912
Other Unallocated [Member]
Operating Statistics [Line Items]
Operating income (loss)	(3,210)	(2,417)	(5,412)	(4,499)
Selling and administrative expenses	3,206	2,433	5,418	4,480
Restructuring/impairment charges		(29)		(29)
Depreciation/amortization	58	13	77	25
Capital expenditures	57	378	276	915
Total assets	20,327		20,327		57,842
Eliminations [Member]
Operating Statistics [Line Items]
Sales	(4,286)	(3,682)	(8,878)	(7,156)
Total assets

[1] (a) Derived from the Company's audited financial statements as of June 30, 2012.