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Acquisition (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Jul. 02, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Goodwill | $ 71,099 |  | $ 46,994
Huen Electric Inc [Member] |  |  |
Consideration paid |  | $ 47,082 |
Preliminary estimated net asset adjustments |  | 10,749 |
Total consideration, net of net asset adjustments |  | 57,831 |
Accounts receivable, net |  | 33,903 |
Costs and estimated earnings in excess of billings on uncompleted contracts |  | 10,570 |
Other current and long term assets |  | 88 |
Property and equipment |  | 3,188 |
Accounts payable |  | (9,592) |
Billings in excess of costs and estimated earnings on uncompleted contracts |  | (6,394) |
Other current liabilities |  | (6,571) |
Net identifiable assets and liabilities |  | 25,192 |
Unallocated intangible assets |  | 9,800 |
Total acquired assets and liabilities |  | 34,992 |
Fair value of acquired noncontrolling interests |  | (1,272) |
Goodwill |  | $ 24,111 |

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