Contract Cost Assets

6 Months Ended

Jun. 30, 2020

Revenue from Contract with Customer [Abstract]

Contract Cost Assets

Contract Cost AssetsDuring the three and six month periods ended June 30, 2020 and 2019, we did not incur any impairment losses to our contract cost assets. We recorded amortization expense related to contract cost assets of $8.7 million and $9.2 million during the three months ended June 30, 2020 and 2019, respectively, and $17.1 million and $17.9 million during the six months ended June 30, 2020 and 2019, respectively.Deferred Revenue

The following tables present the changes in deferred revenue for the periods presented (in thousands):

	Three Months Ended June 30, 2020
Balance as of April 1, 2020	$	35,347
Deferral of revenue	222,895
Less: Revenue recognized	(213,728)
Balance as of June 30, 2020	$	44,514

	Six Months Ended June 30, 2020
Balance as of January 1, 2020	$	39,747
Deferral of revenue	476,624
Less: Revenue recognized	(471,857)
Balance as of June 30, 2020	$	44,514

During the three months ended June 30, 2020 we recognized as revenue a total of $33.8 million pertaining to amounts that were recorded in deferred revenue as of April 1, 2020. During the six months ended June 30, 2020 we recognized as revenue a total of $36.6 million pertaining to amounts that were recorded in deferred revenue as of January 1, 2020.