8. Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 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		Six Months Ended
	June 30,		June 30,
	2020	2019	2020	2019
Basic weighted average shares outstanding	29,652	29,814	29,759	29,807
Effect of potentially dilutive stock options and restricted stock awards	406	340	372	318
Diluted weighted average common shares	30,058	30,154	30,131	30,125
Anti-dilutive shares	3	41	40	217