Note 7 - Bank Lines of Credit and Other Debt (Detail) - Summary of Outstanding Bank Lines of Credit (Parentheticals)														9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Apr. 23, 2016 USD ($)	Sep. 30, 2012 Euros [Member] BankLineOfCreditThree[Member] EUR (€)	Dec. 31, 2011 Euros [Member] BankLineOfCreditThree[Member] EUR (€)	Sep. 30, 2012 Euros [Member] Bank Line Of Credit Four [Member] EUR (€)	Dec. 31, 2011 Euros [Member] Bank Line Of Credit Four [Member] EUR (€)	Sep. 30, 2012 US Dollar [Member] BankLineOfCreditThree[Member] USD ($)	Dec. 31, 2011 US Dollar [Member] BankLineOfCreditThree[Member] USD ($)	Sep. 30, 2012 US Dollar [Member] Bank Line Of Credit Four [Member] USD ($)	Dec. 31, 2011 US Dollar [Member] Bank Line Of Credit Four [Member] USD ($)	Sep. 30, 2012 Minimum [Member] Bank Line Of Credit Four [Member]	Dec. 31, 2011 Minimum [Member] Bank Line Of Credit Four [Member]	Sep. 30, 2012 Maximum [Member] Bank Line Of Credit Four [Member]	Dec. 31, 2011 Maximum [Member] Bank Line Of Credit Four [Member]	Sep. 30, 2012 Bank Line Of Credit One [Member] USD ($)	Dec. 31, 2011 Bank Line Of Credit Two [Member] USD ($)	Sep. 30, 2012 BankLineOfCreditThree[Member]	Dec. 31, 2011 BankLineOfCreditThree[Member]	Sep. 30, 2012 Bank Line Of Credit Four [Member]	Dec. 31, 2011 Bank Line Of Credit Four [Member]
Bank and Facility Lines of Credit	$ 35,000,000	€ 4,000,000	€ 4,000,000	€ 1,200,000	€ 1,000,000	$ 5,141,000	$ 5,182,000	$ 1,542,000	$ 1,296,000					$ 35,000,000	$ 21,000,000
Bank and Facility Interest Rates														4.50%	2.69%	0.98%	2.13%
Bank and Facility Due Dates														Apr. 23, 2016	Jul. 01, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Facilitiеs intеrеst ratе Minimum										1.42%	2.56%
Facilitiеs intеrеst ratе Maximum												2.60%	3.12%