8. Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

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		Nine Months Ended
	September 30,		September 30,
	2019	2018	2019	2018
Basic weighted average shares outstanding	29,831	29,863	29,815	29,822
Effect of potentially dilutive stock options and restricted stock awards	—	429	334	412
Diluted weighted average common shares	29,831	30,292	30,149	30,234
Anti-dilutive shares	95	64	56	35