Earnings per share ("EPS") (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of Reconciliation of Weighted Average Shares Used in Diluted EPS

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Weighted average common shares-basic		18,413,756		18,050,551		18,409,331		18,015,308
Effect of dilutive securities
Unexercised stock options and stock purchase plan		327,171		156,109		318,047		115,560
Unvested restricted stock awards and units		94,633		136,378		83,978		157,182
Weighted average common shares-diluted		18,835,560		18,343,038		18,811,356		18,288,050