8. Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of weighted-average common shares outstanding used to calculate basic and diluted earnings per shares and the anti-dilutive shares

The weighted average number of common shares outstanding used to calculate basic and diluted earnings per share, and the anti-dilutive shares that are excluded from the diluted earnings per share calculation are as follows (in thousands):

	Three Months Ended
	March 31,
	2020	2019
Basic weighted average shares outstanding	29,865	29,801
Effect of potentially dilutive stock options and restricted stock awards	331	303
Diluted weighted average common shares	30,196	30,104
Anti-dilutive shares	62	226