Weighted-Average Number of Shares Used in Computing Earnings Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Weighted average basic shares outstanding (in shares)	12,149,384	12,288,392	12,113,058	12,228,721
Plus: Dilutive impact of employee stock awards (in shares)	127,564	109,976	141,161	186,352
Weighted average diluted shares outstanding (in shares)	12,276,948	12,398,368	12,254,219	12,415,073
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive shares (in shares)	0	0	0	0