Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Weighted-Average Number of Shares of Common Stock Used to Calculate Basic and Diluted Earnings Per Share

The table below presents the weighted-average number of shares of common stock used to calculate basic and diluted earnings per share:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2019		2018		2019		2018
Weighted-average number of shares of common stock for    calculating basic earnings per share		24,268		24,172		24,237		24,128
Effect of potentially dilutive securities from equity-based    compensation		364		391		355		422
Weighted-average number of shares of common stock for    calculating diluted earnings per share		24,632		24,563		24,592		24,550