Acquisitions - Schedule of Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Business Acquisition
Revenues	$ 202,321	$ 180,127
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 9,578	$ 8,369
Diluted earnings per share	$ 0.22	$ 0.20