Annual report pursuant to Section 13 and 15(d)

Stockholder's Equity and Earnings (Loss) Per Share - Pro Forma Earnings Per Share (Details)

v3.19.1
Stockholder's Equity and Earnings (Loss) Per Share - Pro Forma Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
[1]
Dec. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest $ 47,205 $ 144,347 $ 96,212 $ 101,464 $ 76,070 $ (2,214) $ (3,973) $ (8,087) $ 389,228 $ 61,796 $ (38,568) [2]
Pro Forma C Corporation Data (unaudited):                      
Taxes due to change to C corporation (Note 16) 21,002 (74,835) (53,512) (45,918) (10,155) 1,413 2,804 3,106 (153,263) (2,832) (53,885) [2]
Net income (loss) 68,207 69,512 42,700 55,546 65,915 (801) (1,169) (4,981) 235,965 58,964 [3] (92,453) [2],[4]
Basic earnings (loss) per share:                      
Net income (loss) $ 68,207 $ 69,512 $ 42,700 $ 55,546 $ 65,915 $ (801) $ (1,169) $ (4,981) $ 235,965 $ 58,964 [3] $ (92,453) [2],[4]
Weighted average common shares outstanding (in USD per share) [2]                     43,107
Basic loss per share (in USD per share) [2]                     $ (0.56)
Diluted earnings (loss) per share:                      
Weighted average common shares, including dilutive effect (in shares) [2]                     43,107
Diluted loss per share (in USD per share)                     $ (0.56)
Pro Forma                      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]                      
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest [2]                     $ (92,453)
Pro Forma C Corporation Data (unaudited):                      
Taxes on income earned as a non-taxable entity (Note 15) [2]                     15,224
Taxes due to change to C corporation (Note 16) [2]                     53,089
Net income (loss) [2]                     (24,140)
Basic earnings (loss) per share:                      
Net income (loss) [2]                     $ (24,140)
[1] Financial information includes the results attributable to Sturgeon for the entire period presented. See Note 4.
[2] Financial information has been recast to include results attributable to Sturgeon. See Note 4.
[3] Financial information includes the results attributable to Sturgeon for the entire period presented. See Note 4.
[4] Financial information has been recast to include results attributable to Sturgeon. See Note 4.