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Contract Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Contract With Customer Asset And Liability [Abstract] |
Changes In Contract Assets | Significant changes in the contract asset balance during the period are as follows:
|  | December 31,
(in thousands) |  | 2019 |  |  | 2018
Beginning balance as of December 31 | $ | 140,082 |  | $ | 146,496
Revenue recognized |  | 2,076,680 |  |  | 2,387,333
Amounts collected or invoiced |  | (2,055,701) |  |  | (2,393,747)
Ending balance as of December 31 | $ | 161,061 |  | $ | 140,082

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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