Other Assets (Tables)

3 Months Ended

Mar. 31, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of other assets

Other assets consist of the following (in thousands): 

	March 31, 2018			December 31, 2017
Costs to obtain contracts	$	169,266		$	157,970
Accumulated amortization of costs to obtain contracts	(18,361		)	(16,485		)
Operating lease right-of-use assets	24,451			25,465
Other assets	46,179			27,804
Total	$	221,535		$	194,754