Condensed Financial Information (Parent Company Only) - Schedule of Condensed Balance Sheets Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Assets
Total assets	$ 1,065,786	$ 782,063
Liabilities and Stockholders' Equity
Long-term debt, net of debt issuance costs	323,176	321,428
Total liabilities	886,509	681,108
Commitments and Contingencies (Note 14)
Stockholders' Equity:
Preferred stock, $.001 par value; 100,000,000 shares authorized as of December 31, 2025 and 2024, respectively; no shares issued and outstanding as of December 31, 2025 and 2024	0	0
Common stock, $.001 par value; 1,000,000,000 shares authorized as of December 31, 2025 and December 31, 2024; 204,153,619 and 191,778,639 shares issued and outstanding as of December 31, 2025 and December 31, 2024, respectively	205	192
Additional paid-in-capital	1,188,089	1,107,952
Accumulated deficit	(1,009,017)	(1,008,293)
Total Alignment Healthcare, Inc. stockholders' equity	179,277	99,851
Total liabilities and stockholders' equity	$ 1,065,786	$ 782,063
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	204,153,619	191,778,639
Common stock, shares outstanding (in shares)	204,153,619	191,778,639
Parent Company
Assets
Investment in subsidiary	$ 520,283	$ 425,033
Total assets	520,283	425,033
Liabilities and Stockholders' Equity
Due to subsidiary	16,061	1,762
Accrued expenses	1,769	1,992
Long-term debt, net of debt issuance costs	323,176	321,428
Total liabilities	341,006	325,182
Commitments and Contingencies (Note 14)
Stockholders' Equity:
Preferred stock, $.001 par value; 100,000,000 shares authorized as of December 31, 2025 and 2024, respectively; no shares issued and outstanding as of December 31, 2025 and 2024	0	0
Common stock, $.001 par value; 1,000,000,000 shares authorized as of December 31, 2025 and December 31, 2024; 204,153,619 and 191,778,639 shares issued and outstanding as of December 31, 2025 and December 31, 2024, respectively	205	192
Additional paid-in-capital	1,188,089	1,107,952
Accumulated deficit	(1,009,017)	(1,008,293)
Total Alignment Healthcare, Inc. stockholders' equity	179,277	99,851
Total liabilities and stockholders' equity	$ 520,283	$ 425,033
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	100,000,000	100,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	204,153,619	191,778,639
Common stock, shares outstanding (in shares)	204,153,619	191,778,639