Earnings Per Share (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
(in thousands)	2019		2018		2019		2018
Weighted-average number of shares of common stock for    calculating basic earnings per share		24,246		24,145		24,221		24,106
Effect of potentially dilutive securities from equity-based    compensation		333		439		340		443
Weighted-average number of shares of common stock for    calculating diluted earnings per share		24,579		24,584		24,561		24,549