Note 10 - Related-party Transactions - Transactions Between the Company and Affiliates (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Due to affiliates consists of the following (in thousands):		$ 8,689	$ 7,873
Due to affiliates		3,270	3,775
Loans Due from Affiliates [Member] | Local Investors in China [Member]
Due from affiliates		0	613
Loans Due to Affiliates [Member] | Local Investors in China [Member]
Due to affiliates	[1]	1,784	1,746
Loans Due to Affiliates [Member] | Local Investors in Mexico [Member]
Due to affiliates	[1]	623	623
Loans Due to Affiliates [Member] | Local Investors in Australia [Member]
Due to affiliates	[1]	597	586
Loans Due to Affiliates [Member] | Local Investors In South Africa [Member]
Due to affiliates	[1]	0	415
Loans Due to Affiliates [Member] | Local Investors Related to Resource Plus [Member]
Due to affiliates	[1]	266	266
Loans Due to Affiliates [Member] | Local Investors in Brazil [Member]
Due to affiliates	[1]	0	139
NSRS [Member]
Due to affiliates consists of the following (in thousands):		3,799	4,805
National Remodel and Setup Services [Member]
Due to affiliates consists of the following (in thousands):		3,484	0
Consulting and Administrative Services (CON) [Member]
Due to affiliates consists of the following (in thousands):		567	939
Office lease expenses (Mr. Burdekin) [Member]
Due to affiliates consists of the following (in thousands):		248	248
Office And Vehicle Rental MHT [Member]
Due to affiliates consists of the following (in thousands):		115	1,470
Consulting and administrative fees (SPARFACTS) [Member]
Due to affiliates consists of the following (in thousands):		325	210
Other [Member]
Due to affiliates consists of the following (in thousands):		$ 151	$ 201

[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.