Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenues	$ 19,746,000	$ 17,628,000
Costs of revenue:
Maintenance and supplies	1,878,000	1,731,000
Depreciation and amortization	4,726,000	4,856,000
Other direct operating costs	3,666,000	3,556,000
Other direct operating costs, related party	1,094,000	759,000
Cost of Revenue, Total	11,364,000	10,902,000
Gross margin	8,382,000	6,726,000
Selling and administrative expense	5,145,000	4,531,000
Interest expense	806,000	739,000
Loss on write down of impaired assets and associated removal costs	0	105,000
Operating income	2,431,000	1,351,000
(Loss) on early extinguishment of debt	0	(401,000)
Interest and other (loss) income	87,000	(3,000)
Income before income taxes	2,518,000	947,000
Income tax expense	963,000	269,000
Net income	1,555,000	678,000
Less: net (income) attributable to non-controlling interests	(227,000)	(484,000)
Net income attributable to American Shared Hospital Services	$ 1,328,000	$ 194,000
Net income per share attributable to American Shared Hospital Services:
Earnings per common share - basic (in dollars per share)	$ 0.21	$ 0.03
Earnings per common share - diluted (in dollars per share)	$ 0.21	$ 0.03
Weighted average common shares for basic earnings per share (in shares)	6,297,000	6,044,000
Weighted average common shares for diluted earnings per share (in shares)	6,303,000	6,059,000
Rental Income from Medical Services [Member]
Revenues	$ 16,655,000	$ 14,719,000
Patient Income [Member]
Revenues	$ 3,091,000	$ 2,909,000