Significant Accounting Policies (Narrative) (Detail) (USD $)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
Significant Accounting Policies [Line Items]
Carrying amount of long-term debt, including current portion	$ 13,500,000		$ 16,400,000
Short-term time deposits	460,000		460,000
Intangible assets amortization expense	195,000	230,000
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 7 months 6 days	15 years 6 months
Antidilutive options outstanding excluded from diluted EPS computations	268,116	1,383,140
Stock-based compensation costs	1	0
Selling, General and Administrative Expenses [Member]
Significant Accounting Policies [Line Items]
Advertising and promotion costs	365,000	427,000
Sales revenue, net [Member]
Significant Accounting Policies [Line Items]
Shipping and handling revenue	131,000	121,000
Cost of sales [Member]
Significant Accounting Policies [Line Items]
Research and development costs	1,286,000	1,336,000
Shipping and handling expense	242,000	223,000
Allowance for doubtful accounts current [Member]
Significant Accounting Policies [Line Items]
Valuation allowances and reserves, balance	230,000		220,000
Returns and other allowances [Member]
Significant Accounting Policies [Line Items]
Valuation allowances and reserves, balance	$ 815,000		$ 1,055,000
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