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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue from Contract with Customer [Abstract] |
Contract with Customer, Asset and Liability | The following table presents the beginning and ending balances of costs in excess of billings, billings in excess of cost and unearned revenue as of March 31, 2020 and December 31, 2019, respectively, and revenue recognized during the three months ended March 31, 2020 and 2019, respectively, that was in billings in excess of cost and unearned revenue at the beginning of the period (in thousands):
| March 31, 2020 |  | December 31, 2019
Costs in excess of billings | $ | 21,834 |  |  | $ | 20,607 |
Billings in excess of cost | (34,567 | ) |  | (47,598 | )
Unearned revenue | (19,388 | ) |  | (17,311 | )
| Three Months Ended March 31, 2020 |  | Three Months Ended March 31, 2019
Revenue recognized in the period from: |  |  |
Amounts included in billings in excess of cost at the beginning of the period | $ | 29,221 |  |  | $ | 9,697 |
Amounts included in unearned revenue at the beginning of the period | $ | 9,619 |  |  | $ | 4,661 |

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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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- References No definition available. + Details
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