Geographic information: (Tables)

12 Months Ended

Dec. 31, 2017

Geographic information:

Schedule of service revenues and long lived assets by geographic region

Below are the Company's service revenues and long lived assets by geographic region (in thousands):

	Years Ended December 31,
	2017		2016		2015
Service Revenue
North America	$	402,194	$	372,810	$	332,814
Europe		82,981		74,090		71,420
Total	$	485,175	$	446,900	$	404,234

	December 31, 2017		December 31, 2016		December 31, 2015
Long lived assets, net
North America	$	282,112	$	285,651	$	285,187
Europe		99,194		76,014	$	74,976
Total	$	381,306	$	361,665	$	360,163