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Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Summary of Impact of Adoption to our Condensed Consolidated Statements of Income and Balance Sheets | The Company recorded a net decrease to beginning retained earnings of $4,454 on January 1, 2018 due to the cumulative impact of adopting Topic 606, as detailed below.
| January 1, 2018
| As Reported |  | 606 Adjustments |  | Adjusted Balances |
Assets: |  |  |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings |  | 104,852 |  |  |  | $ | (9,194 | ) |  |  | $ | 95,658 |  |
Prepaid expenses and other current assets |  | 14,037 |  |  |  | 4,343 |  |  |  | 18,380 |  |
Deferred income taxes, net |  | — |  |  |  | 1,003 |  |  |  | 1,003 |  |
Liabilities: |  |  |  |  |  |  |  |  |
Accrued expenses and other current liabilities |  | 23,260 |  |  |  | 1,190 |  |  |  | 24,450 |  |
Deferred income taxes, net |  | 584 |  |  |  | (584 | ) |  |  | — |  |
Shareholders' Equity: |  |  |  |  |  |  |  |  |
Retained earnings |  | 235,844 |  |  |  | (4,454 | ) |  |  | 231,390 |  |
In accordance with Topic 606, the disclosure of the impact of adoption to the Company’s consolidated statements of income (loss) and balance sheets was as follows:
|  | Impact of changes in accounting policies
|  | 12/31/2018
|  | As Reported |  | Balances without adoption of Topic 606 |  | Effect of Change Higher/(Lower)
Revenues |  | $ | 787,138 |  |  | $ | 784,316 |  |  | $ | 2,822 |
Cost of revenues |  | 613,526 |  |  | 610,229 |  |  | 3,297 |
Gross profit |  | 173,612 |  |  | 174,087 |  |  | (475 | )
Operating expenses: |  |  |  |  |  |
Selling, general and administrative expenses |  | 114,513 |  |  | 114,513 |  |  | — |
Operating income |  | 59,099 |  |  | 59,574 |  |  | (475 | )
Other expenses, net |  | 16,709 |  |  | 16,709 |  |  | — |
Income before provision for income taxes |  | 42,390 |  |  | 42,865 |  |  | (475 | )
Income tax provision |  | 4,813 |  |  | 4,998 |  |  | (185 | )
Net income |  | 37,577 |  |  | 37,867 |  |  | (290 | )
Net income attributable to redeemable non-controlling interests |  | 407 |  |  | 407 |  |  | — |
Net income attributable to common shareholders |  | $ | 37,984 |  |  | $ | 38,274 |  |  | $ | (290 | )
Basic income per share |  | $ | 0.83 |  |  | $ | 0.84 |  |  | $ | (0.01 | )
Diluted income per share |  | $ | 0.81 |  |  | $ | 0.82 |  |  | $ | (0.01 | )
| December 31, 2018
|  | As Reported |  | Balances without adoption of Topic 606 |  | Effect of Change Higher/(Lower)
Assets: |  |  |  |  |  |
Costs and estimated earnings in excess of billings |  | $ | 86,842 |  |  | $ | 93,214 |  |  | $ | (6,372 | )
Prepaid expenses and other current assets |  | 11,571 |  |  | 10,644 |  |  | 927 |
Liabilities: |  |  |  |  |  |
Accrued expenses and other current liabilities |  | 35,947 |  |  | 34,877 |  |  | 1,070 |
Deferred income taxes, net |  | 4,352 |  |  | 6,123 |  |  | (1,771 | )
Shareholders' Equity: |  |  |  |  |  |
Retained earnings |  | 269,806 |  |  | 274,550 |  |  | (4,744 | )
Summary of Disaggregation of Revenue | The following table provides information about disaggregated revenue by line of business, reportable segments, and geographical region for the year ended December 31, 2018.
| US Regions |  | U.S. Federal |  | Canada |  | Non-Solar DG |  | All Other |  | Total
Line of Business
Year ended December 31, 2018
Project revenue | $ | 296,226 |  |  | $ | 202,286 |  |  | $ | 29,571 |  |  | $ | 4,550 |  |  | $ | 12,420 |  |  | $ | 545,053 |
O&M revenue | 17,814 |  |  | 39,250 |  |  | 37 |  |  | 8,135 |  |  | — |  |  | 65,236 |
Energy assets | 18,442 |  |  | 4,062 |  |  | 2,604 |  |  | 69,599 |  |  | 1,069 |  |  | 95,776 |
Other | 1,862 |  |  | 711 |  |  | 6,770 |  |  | 371 |  |  | 71,359 |  |  | 81,073 |
Total revenues | $ | 334,344 |  |  | $ | 246,309 |  |  | $ | 38,982 |  |  | $ | 82,655 |  |  | $ | 84,848 |  |  | $ | 787,138 |
Geographical Regions
Year ended December 31, 2018
United States | $ | 334,344 |  |  | $ | 246,309 |  |  | $ | 2,557 |  |  | $ | 82,655 |  |  | $ | 68,883 |  |  | $ | 734,748 |
Canada | — |  |  | — |  |  | 36,425 |  |  | — |  |  | 303 |  |  | 36,728 |
Other | — |  |  | — |  |  | — |  |  | — |  |  | 15,662 |  |  | 15,662 |
Total revenues | $ | 334,344 |  |  | $ | 246,309 |  |  | $ | 38,982 |  |  | $ | 82,655 |  |  | $ | 84,848 |  |  | $ | 787,138 |
Summary of Contract Balances | The following table provides information about receivables, contract assets and contract liabilities from contracts with customers:
|  | January 1, 2018 |  | December 31, 2018 |
Accounts receivable, net |  | $ | 85,121 |  |  | $ | 85,985 |  |
Accounts receivable retainage, net |  | 17,484 |  |  | 13,516 |  |
Contract Assets: |  |  |  |  |
Costs and estimated earnings in excess of billings |  | 95,658 |  |  | 86,842 |  |
Contract Liabilities: |  |  |  |  |
Billings in excess of cost and estimated earnings |  | 27,248 |  |  | 30,706 |  |

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