Stock-Based Compensation - Narrative (Details) - USD ($) shares in Millions		12 Months Ended
	May 22, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
2025 Omnibus Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1.9
Percentage of future offerings reserved for awards under the plan	6.50%
Shares reserved for future issuance (in shares)		1.7
Performance period	3 years
Share-based compensation expense		$ 3,800,000
Accelerated vesting cost		1,200,000
Unrecognized compensation cost		$ 3,700,000
Period for recognition		1 year 9 months 18 days
2025 Omnibus Incentive Compensation Plan \| Performance Achievement One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting, performance achievement	0.00%
2025 Omnibus Incentive Compensation Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share vesting period	1 year
2025 Omnibus Incentive Compensation Plan \| Minimum \| Performance Achievement Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting, performance achievement	50.00%
2025 Omnibus Incentive Compensation Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share vesting period	3 years
2025 Omnibus Incentive Compensation Plan \| Maximum \| Performance Achievement Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting, performance achievement	200.00%
Time Based Restricted Shares and Performance Based RSUs \| 2025 Omnibus Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value of awards granted during period		$ 6,100,000	$ 0	$ 0
Unvested restricted Shares \| Restricted Share Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			600,000	$ 900,000
Unrecognized compensation cost			$ 0

National Healthcare Properties, Inc. 10-K