Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Cash flows from operating activities
Net loss	$ (1,714)	$ (717)	$ (3,646)	$ 687	$ (2,431)	$ (2,959)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization					1,108	282
Amortization of operating lease right-of-use assets					134	92
Share-based compensation expenses					84	6,857
Provision for allowances for doubtful accounts					947	0
Loss on disposal of long-term investments	0		38		0	38
Deferred taxes					(4)	(40)
Change in fair value of warrant liabilities	(987)		(4,322)		(1,782)	(6,829)	$ 2,039
Other non-operating income					(72)	0
Changes in operating assets and liabilities
Accounts receivable					(290)	(1,284)
Prepayment and deposit to suppliers					1,100	(980)
Due from related parties					60	0
Other current assets					29	8
Long-term deposits and prepayments					(51)	(554)
Accounts payable					(513)	403
Advance from customers					(402)	89
Accrued payroll and other accruals					220	197
Other current liabilities					311	(123)
Taxes payable					8	(49)
Lease payment liability related to short-term leases					(41)	(54)
Operating lease liabilities					(119)	(31)
Net cash used in operating activities					(2,144)	(5,331)
Cash flows from investing activities
Payment for leasehold improvements and purchase of vehicles, furniture and office equipment					0	(221)
Cash effect of deconsolidation of VIEs’ subsidiaries					0	(8)
Investments and advances to ownership investee entities					0	(463)
Repayment from ownership investee entities					12	0
Short-term loans to unrelated parties					(2,600)	(312)
Repayment of short-term loans and interest income from unrelated parties					2,109	1,303
Payment for purchase of software technologies					0	(1,160)
Deposit and prepayment paid for contracts of other investing activities					0	(3,500)
Net cash used in investing activities					(479)	(4,361)
Cash flows from financing activities
Proceeds from issuance of common stock and warrant (net of cash offering cost of US$1,600)					0	17,111
Net cash provided by financing activities					0	17,111
Effect of exchange rate fluctuation on cash and cash equivalents					(96)	36
Net (decrease)/increase in cash and cash equivalents					(2,719)	7,455
Cash and cash equivalents at beginning of the period		$ 7,173		$ 4,297	7,173	4,297	4,297
Cash and cash equivalents at end of the period	$ 4,454		$ 11,752		4,454	11,752	$ 7,173
Supplemental disclosure of cash flow information
Income taxes paid					0	0
Interest expense paid					$ 0	$ 0