Acquisitions (Tables)

12 Months Ended

Dec. 31, 2017

January 1, 2015 Acquisition [Member]

Schedule of Pro Forma Combined Results of Operations

The unaudited pro forma combined results of operations have been prepared as if the acquisitions had occurred on January 1, 2015, as follows (in thousands):

	December 31,
	2016			2015
Total revenues	$	461,653		$	434,967
Loss before income taxes	$	(19,389	)	$	(27,374	)