Earnings per share (EPS) (Tables)

12 Months Ended

Dec. 31, 2016

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,
	2016		2015		2014
Weighted average common shares-basic		18,144,019		18,795,194		18,459,054
Effect of diluted securities:
Unexercised stock options and employee stock purchase plan		161,092		—		—
Unvested time-based restricted stock awards		138,291		—		—
Unvested performance-based restricted stock awards		19,759		—		—
Weighted average common shares-diluted		18,463,161		18,795,194		18,459,054