Significant Accounting Policies (Narrative) (Detail) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Significant Accounting Policies [Line Items]
Carrying amount of long-term debt, including current portion	$ 16,400,000	$ 20,257,000
Short-term time deposits	460,000	460,000
Provision for inventory obsolescence	354,000	504,000
Intangible assets amortization expense	917,000	1,065,000
Estimated amortization expense-2014	781,000
Estimated amortization expense-2015	667,000
Estimated amortization expense-2016	529,000
Estimated amortization expense-2017	441,000
Estimated amortization expense-2018	371,000
Weighted average amortization period for acquired intangible assets	14 years 9 months 18 days	15 years 9 months 18 days
Percentage of gross sales, sales returns, rebates and allowances	6.00%	6.00%
Antidilutive options outstanding excluded from diluted EPS computations	370,750	649,348
Stock-based compensation costs	0	8,000
Stock-based compensation costs, effect on EPS	$ 0.00	$ 0.00
Selling, General and Administrative Expenses [Member]
Significant Accounting Policies [Line Items]
Advertising and promotion costs	1,318,000	1,081,000
Sales revenue, net [Member]
Significant Accounting Policies [Line Items]
Shipping and handling revenue	532,000	584,000
Cost of sales [Member]
Significant Accounting Policies [Line Items]
Research and development costs	5,119,000	4,264,000
Shipping and handling expense	1,090,000	1,090,000
Allowance for doubtful accounts current [Member]
Significant Accounting Policies [Line Items]
Valuation allowances and reserves, balance	220,000	200,000
Returns and other allowances [Member]
Significant Accounting Policies [Line Items]
Valuation allowances and reserves, balance	1,055,000	1,184,000
Inventory obsolescence reserve [Member]
Significant Accounting Policies [Line Items]
Valuation allowances and reserves, balance	3,392,000	3,038,000
Provision for inventory obsolescence	$ 354,000	$ 504,000
Marks USA I, LLC [Member] | Customer relationships [Member]
Significant Accounting Policies [Line Items]
Period of amortization	20 years
Marks USA I, LLC [Member] | Non-compete agreement [Member]
Significant Accounting Policies [Line Items]
Period of amortization	7 years