Other Assets (Tables)

6 Months Ended

Jun. 30, 2020

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

Schedule of other assets

Other assets consist of the following (in thousands): 

	June 30, 2020		December 31, 2019
Costs to obtain contracts - customer agreements	$	292,640	$	268,964
Costs to obtain contracts - incentives	2,481		2,481
Accumulated amortization of costs to obtain contracts	(43,801)		(36,925)
Unbilled receivables, net	123,759		104,346
Operating lease right-of-use assets	30,515		34,678
Other assets	26,810		34,859
Total	$	432,404	$	408,403

Summary of unbilled receivables, allowance for credit losses

The change in allowance for credit loss is as follows (in thousands):

Balance at January 1, 2020	$	(1,228)
Provision for credit losses	(1,007)
Write-offs	775
Recoveries	—
Balance at June 30, 2020	$	(1,460)