Other Assets (Tables)

6 Months Ended

Jun. 30, 2018

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

Schedule of other assets

Other assets consist of the following (in thousands): 

	June 30, 2018			December 31, 2017
Costs to obtain contracts	$	183,870		$	157,970
Accumulated amortization of costs to obtain contracts	(20,376		)	(16,485		)
Operating lease right-of-use assets	21,620			25,465
Other assets	59,727			27,804
Total	$	244,841		$	194,754