Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Ordinary shares, par value (in dollars per share)	$ 0.0012	$ 0.0012
Ordinary shares, authorized	40,000,000	40,000,000
Ordinary shares, issued	31,164,004	31,164,004
Ordinary shares, outstanding	31,164,004	31,164,004
Series A-1
Preferred shares, par value (per share)	$ 1,000	$ 1,000
Preferred shares, authorized	2,000,000	2,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Series A-3
Preferred shares, par value (per share)	$ 1,000	$ 1,000
Preferred shares, authorized	1,000,000	1,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Series A-4
Preferred shares, par value (per share)	$ 1,000	$ 1,000
Preferred shares, authorized	2,000,000	2,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Series A-5
Preferred shares, par value (per share)	$ 1,000
Preferred shares, authorized	1,000,000
Preferred shares, issued	0
Preferred shares, outstanding	0