Note 10 - Related-party Transactions - Transactions Between the Company and Affiliates (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
National Store Retail Services (NSRS) (1)		$ 9,878	$ 8,689
Due to affiliates	[1]	2,964	3,270
Loans Due to Affiliates [Member] | Local Investors in China [Member]
Due to affiliates	[1]	1,382
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]	693	597
Loans Due to Affiliates [Member] | Local Investors Related to Resource Plus [Member]
Due to affiliates	[1]	266	266
Loans Due from Affiliates [Member] | Local Investors in China [Member]
Due to affiliates	[1]		1,784
NSRS [Member]
National Store Retail Services (NSRS) (1)	[2]	0	3,799
National Remodel and Setup Services [Member]
National Store Retail Services (NSRS) (1)	[2]	8,565	3,484
Consulting and Administrative Services (CON) [Member]
National Store Retail Services (NSRS) (1)	[3]	477	567
Office lease expenses (Mr. Burdekin) [Member]
National Store Retail Services (NSRS) (1)	[3]	248	248
Office And Vehicle Rental MHT [Member]
National Store Retail Services (NSRS) (1)	[3]	0	115
Consulting and administrative fees (SPARFACTS) [Member]
National Store Retail Services (NSRS) (1)	[3]	431	325
Other [Member]
National Store Retail Services (NSRS) (1)	[3]	$ 157	$ 151

[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.

[2] 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.

[3] These expenses are reflected in "Selling, general, and administrative expense" expense in the consolidated statements of operations and comprehensive (loss) income