Note 4 - Credit Facilities (Details Textual) ¥ in Millions, AUD in Millions		3 Months Ended	12 Months Ended
		Dec. 31, 2015 AUD	Dec. 31, 2015 USD ($)	Dec. 31, 2015 JPY (¥)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CNY (¥)	Dec. 31, 2015 JPY (¥)	Sep. 28, 2015 USD ($)	Dec. 31, 2014 USD ($)	Mar. 07, 2011 USD ($)	Mar. 07, 2011 JPY (¥)
Sterling Credit Facility [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		12.00%
Sterling Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 8,500,000			$ 8,500,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.125%	0.125%
Percent Of Eligible Domestic Accounts Receivable Less Certain Reserves To Calculate Borrowing Availability		85.00%			85.00%	85.00%	85.00%
Oxford Funding Pty Ltd [Member]
Line of Credit Facility, Maximum Borrowing Capacity		AUD 1.2			$ 876,000
Percent Of Eligible Domestic Accounts Receivable Less Certain Reserves To Calculate Borrowing Availability		80.00%			80.00%	80.00%	80.00%
Mizuho Bank [Member]
Debt Instrument, Face Amount										$ 166,000	¥ 20,000,000
Debt Instrument, Periodic Payment			$ 2,000	¥ 238,000
Debt Instrument, Interest Rate, Stated Percentage		0.10%			0.10%	0.10%	0.10%
Loans Payable					$ 51,000		¥ 6,200,000
Loans Payable, Current					24,000
Loans Payable, Noncurrent					27,000
China Construction Bank [Member] | Unilink [Member]
Debt Instrument, Face Amount					$ 216,000	¥ 1.4
Debt Instrument, Interest Rate, Stated Percentage		7.20%			7.20%	7.20%	7.20%
China Construction Bank [Member]
Debt Instrument, Interest Rate, Stated Percentage		7.20%			7.20%	7.20%	7.20%
Loans Payable, Current	[1]				$ 1,419,000				$ 1,475,000

[1] Represent loans from the local investors into the Company's subsidiaries (representing their proportionate share of working capital loans). The loans have no payment terms and are due on demand and as such have been classified as current liabilities in the Company's consolidated financial statements.