Earnings per share (EPS) (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Reconciliation of Weighted Average Shares Used in the Diluted EPS

The following is a reconciliation of the weighted average shares used in the diluted EPS computations.

	Year Ended December 31,
	2020		2019		2018
Weighted average common shares-basic		19,267,920		18,903,289		18,494,002
Effect of diluted securities:
Unexercised stock options and employee stock purchase plan		51,951		—		313,648
Unvested time-based restricted stock awards		71,847		—		—
Unvested performance-based restricted stock awards		—		—		103,960
Weighted average common shares-diluted		19,391,718		18,903,289		18,911,610