Per Share Amounts (Tables)

3 Months Ended

Mar. 31, 2021

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The following table sets forth the computation of basic and diluted earnings per share for the three-month periods ended March 31, 2021 and 2020:

	Three Months ended March 31,
	2021		2020
Net income (loss) attributable to American Shared Hospital Services	$	29,000	$	(135,000)
Weighted average common shares for basic earnings per share	6,254,000		6,126,000
Diluted effect of stock options and restricted stock awards	68,000		27,000
Weighted average common shares for diluted earnings per share	6,322,000		6,153,000
Basic earnings (loss) per share	$	0.00	$	(0.02)
Diluted earnings (loss) per share	$	0.00	$	(0.02)