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Construction Contract and Other Service Revenues (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Change in Accounts Receivable |  |  |  |  |  |
Beginning balance | $ 37,623 |  | $ 37,623 |  | $ 26,277 |
Ending balance | 37,623 |  | 37,623 |  | 26,277 |
Construction Contract Revenue |  |  |  |  |  |
Change in Accounts Receivable |  |  |  |  |  |
Beginning balance | 15,494 | $ 5,571 | 15,494 | $ 5,571 | 6,701 | $ 4,577
Ending balance | 15,494 | 5,571 | 15,494 | 5,571 | 6,701 | 4,577
Change in Contract with Customer, Asset |  |  |  |  |  |
Beginning balance | 16,743 | 2,821 | 16,743 | 2,821 | 3,189 | 4,884
Ending balance | 16,743 | 2,821 | 16,743 | 2,821 | 3,189 | 4,884
Change in Contract with Customer, Liability |  |  |  |  |  |
Beginning balance | 725 | 560 | 725 | 560 | 568 | 27,402
Ending balance | 725 | 560 | 725 | 560 | $ 568 | $ 27,402
Revenue recognized included in beginning balance | $ 0 | $ 0 | $ 445 | $ 27,296 |  |

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