Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 25,314	$ 19,392
Short-term investments	25,597	25,289
Accounts receivable	188	105
Inventory, net	13,146	13,709
Prepaid expenses and other current assets	692	618
Total current assets	64,937	59,113
Property and equipment, net	518	634
Deferred tax assets	2,877	2,280
Right-of-use assets	654	983
Long-term investments	6,795	9,737
Other assets	183	193
Total assets	75,964	72,940
Current liabilities:
Accounts payable	1,300	2,100
Accrued liabilities	2,064	1,564
Customer deposits	1,646	1,545
Lease liabilities	594	700
Dividend payable	4,583	4,551
Total current liabilities	10,187	10,460
Other liabilities	168	404
Total liabilities	10,355	10,864
Commitments and contingencies (Note 5)
Stockholders’ equity
Preferred stock, par value $0.0001 per share - 5,000,000 shares authorized as of June 30, 2023 and December 31, 2022; nil shares issued and outstanding as of June 30, 2023 and December 31, 2022
Common stock, par value $0.0001 per share - 75,000,000 shares authorized as of June 30, 2023 and December 31, 2022; 18,330,591 and 18,198,737 shares issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	2	2
Additional paid-in capital	26,739	26,046
Accumulated other comprehensive loss	(146)	(147)
Retained earnings	39,014	36,175
Total stockholders’ equity	65,609	62,076
Total liabilities and stockholders’ equity	$ 75,964	$ 72,940