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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Segment Information |
Schedule of segment's internal financial reports | The information in the following table is derived from the segment’s internal financial reports used for corporate management purposes:
|  | For the Year Ended December 31,
(in thousands) |  | 2019 |  | 2018 |  | 2017
Contract revenues: |  |  |  |  |  |  |  |  |
T&D |  | $ | 1,134,411 |  | $ | 893,108 |  | $ | 879,372
C&I |  |  | 936,748 |  |  | 638,061 |  |  | 523,945
|  | $ | 2,071,159 |  | $ | 1,531,169 |  | $ | 1,403,317
Income from operations: |  |  |  |  |  |  |  |  |
T&D |  | $ | 73,580 |  | $ | 57,242 |  | $ | 39,631
C&I |  |  | 30,506 |  |  | 34,112 |  |  | 25,048
General Corporate |  |  | (46,908) |  |  | (41,042) |  |  | (35,121)
|  | $ | 57,178 |  | $ | 50,312 |  | $ | 29,558
Schedule of assets allocation by segment | Identifiable assets, consisting of contract receivables, contract assets, construction materials inventory, goodwill and intangibles for each segment are as follows as of December 31:
(in thousands) |  | 2019 |  | 2018
T&D |  | $ | 306,226 |  | $ | 274,038
C&I |  |  | 414,264 |  |  | 257,049
General Corporate |  |  | 287,381 |  |  | 217,668
|  | $ | 1,007,871 |  | $ | 748,755
Schedule of depreciation and amortization by segment | An allocation of total depreciation, including depreciation of shared construction equipment, and amortization to each segment is as follows:
|  | For the Year Ended December 31,
(in thousands) |  | 2019 |  | 2018 |  | 2017
Depreciation and amortization |  |  |  |  |  |  |  |  |
T&D |  | $ | 35,711 |  | $ | 33,977 |  | $ | 34,990
C&I |  |  | 8,805 |  |  | 5,936 |  |  | 3,586
|  | $ | 44,516 |  | $ | 39,913 |  | $ | 38,576

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