CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue:
Medical services	$ 17,237,000	$ 16,675,000	$ 16,768,000
Equipment sales	4,984,000	0	0
Sales Revenue, Goods, Gross	22,221,000	16,675,000	16,768,000
Costs of revenue:
Maintenance and supplies	1,484,000	1,566,000	1,429,000
Depreciation and amortization	6,127,000	5,888,000	6,378,000
Cost of equipment sales	4,146,000	0	0
Other direct operating costs	2,467,000	2,012,000	1,974,000
Cost Of Revenue	14,224,000	9,466,000	9,781,000
Gross margin	7,997,000	7,209,000	6,987,000
Selling and administrative expense	4,041,000	4,240,000	3,928,000
Transaction costs	0	0	342,000
Interest expense	2,367,000	2,104,000	2,064,000
Operating income	1,589,000	865,000	653,000
Interest and other income	108,000	107,000	60,000
Income before income taxes	1,697,000	972,000	713,000
Income tax expense	208,000	166,000	247,000
Net income	1,489,000	806,000	466,000
Less: net income attributable to non-controlling interests	(983,000)	(749,000)	(654,000)
Net income (loss) attributable to American Shared Hospital Services	$ 506,000	$ 57,000	$ (188,000)
Net income (loss) per share attributable to American Shared Hospital Services:
Earnings (loss) per common share- basic (in dollers per share)	$ 0.11	$ 0.01	$ (0.04)
Earnings (loss) per common share- diluted (in dollers per share)	$ 0.11	$ 0.01	$ (0.04)