CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Revenues	$ 4,568	$ 5,321
Costs of revenue:
Maintenance and supplies	633	668
Depreciation and amortization	1,647	1,894
Other direct operating costs	894	822
Cost and expenses	3,174	3,384
Gross Margin	1,394	1,937
Selling and administrative expense	1,211	1,055
Interest expense	282	367
Operating (loss) income	(99)	515
Interest and other income	3	4
(Loss) income before income taxes	(96)	519
Income tax (benefit) expense	(28)	124
Net (loss) income	(68)	395
Less: Net income attributable to non-controlling interest	(67)	(125)
Net (loss) income attributable to American Shared Hospital Services	$ (135)	$ 270
Net (loss) income per share:
(Loss) earnings per common share - basic (in USD per share)	$ (0.02)	$ 0.05
(Loss) earnings per common share - diluted (in USD per share)	$ (0.02)	$ 0.05