Per Share Amounts (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table sets forth the computation of basic and diluted earnings per share for the three and nine month periods ended September 30, 2015 and 2014:

	Three Months ended September 30,				Nine Months ended September 30,
	2015		2014		2015		2014
Net income (loss) attributable to American Shared Hospital Services	$	43,000	$	13,000	$	(1,799,000)	$	(1,010,000)
Weighted average common shares for basic earnings per share		5,494,000		5,261,000		5,485,000		4,858,000
Diluted effect of stock options and restricted stock		22,000		43,000		-		-
Weighted average common shares for diluted earnings per share		5,516,000		5,304,000		5,485,000		4,858,000
Basic earnings (loss) per share	$	0.01	$	0.00	$	(0.33)	$	(0.21)
Diluted earnings (loss) per share	$	0.01	$	0.00	$	(0.33)	$	(0.21)