Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Revenue:        
Electricity sales $ 135,951 $ 105,736 $ 238,098 $ 204,170
Other revenue 3,989 2,024 13,501 4,423
Total revenue 139,940 107,760 251,599 208,593
Cost of revenue:        
Project expense 33,665 33,405 68,227 62,505
Transmission costs 7,643 4,722 14,833 4,792
Depreciation, amortization and accretion 54,979 48,518 110,431 92,258
Total cost of revenue 96,287 86,645 193,491 159,555
Gross profit 43,653 21,115 58,108 49,038
Operating expenses:        
General and administrative 9,089 11,777 19,795 22,901
Related party general and administrative 3,663 3,576 7,731 7,002
Impairment loss 4,238 0 4,238 0
Total operating expenses 16,990 15,353 31,764 29,903
Operating income 26,663 5,762 26,344 19,135
Other expense:        
Interest expense (27,709) (24,839) (53,153) (47,394)
Gain (loss) on derivatives 8,801 (4,751) 14,461 (5,399)
Earnings (loss) in unconsolidated investments, net (742) 14,519 17,470 31,395
Net loss on transactions (2,002) (807) (3,100) (1,119)
Other income (expense), net (2,375) (27) (5,222) 553
Total other expense (24,027) (15,905) (29,544) (21,964)
Net income (loss) before income tax 2,636 (10,143) (3,200) (2,829)
Tax provision 4,410 4,541 11,194 9,316
Net loss (1,774) (14,684) (14,394) (12,145)
Net loss attributable to noncontrolling interest (34,492) (28,904) (183,034) (32,018)
Net income attributable to Pattern Energy $ 32,718 $ 14,220 $ 168,640 $ 19,873
Weighted-average number of common shares outstanding        
Basic (in shares) 97,459,472 87,065,591 97,444,016 87,064,110
Diluted (in shares) 97,496,217 87,217,381 105,662,687 87,257,130
Earnings per share attributable to Pattern Energy        
Basic (in dollars per share) $ 0.34 $ 0.16 $ 1.73 $ 0.23
Diluted (in dollars per share) 0.34 0.16 1.67 0.23
Dividends declared per Class A common share (in dollars per share) $ 0.42 $ 0.42 $ 0.84 $ 0.83