Note G - Bank Lines of Credit and Other Debt (Detail)	6 Months Ended
	Dec. 31, 2012 USD ($)	Apr. 23, 2016 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2013 EUR (€)	Jan. 02, 2013 EUR (€)	Jun. 30, 2012 USD ($)	Jun. 30, 2012 EUR (€)	Apr. 25, 2012 USD ($)	Apr. 23, 2016 Base Rate Loans [Member] Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 Base Rate Loans [Member] Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 LIBOR Rate [Member] Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 LIBOR Rate [Member] Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 Euros Or Pound Sterling Rate [Member] Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 Euros Or Pound Sterling Rate [Member] Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 Line Of Credit Facility Less Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 Line Of Credit Facility Greater Than Fifty Percent Of Maximum Borrowing Capacity [Member]	Apr. 23, 2016 Federal Funds Rate [Member]	Apr. 23, 2016 LIBOR [Member]
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)	$ 16,234,000
Line of Credit Facility, Maximum Borrowing Capacity (in Euro and Dollars)		35,000,000	1,587,000	1,200,000	9,000,000	1,296,000	1,000,000
Line Of Credit Facility Maturity Term	6 months
Letters Of Credit Maximum Borrowing Capacity (in Dollars)		5,000,000
Debt Instrument, Basis Spread on Variable Rate																	0.50%	1.00%
Fifty Percent Of Line Of Credit Facility Maximum Borrowing Capacity															50.00%	50.00%
Debt Instrument, Interest Rate, Stated Percentage									1.25%	1.50%	2.25%	2.50%	3.00%	3.25%
Eligible Accounts Receivable Percentage		85.00%
Eligible Extended Pay Accounts Percentage		85.00%
Line Of Credit AR Limit Value (in Dollars)		1,500,000
Lineof Credit Inventory Value Ceiling (in Dollars)		20,000,000
Line Of Credit Facility Percentage Of Eligible Inventory		65.00%
Line Of Credit Facility Net Recovery Percentage		85.00%
Line Of Credit Inventory Reserve Amount (in Dollars)		3,500,000
Credit Facility Covenant Capital Expenditures (in Dollars)		2,400,000
Twenty Percent Of Line Of Credit Facility Maximum Borrowing Capacity		20.00%
Repayments On Lines Of Credit (in Dollars)								$ 9,924,000