Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Information (Details)

v3.8.0.1
Selected Quarterly Financial Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Selected Quarterly Financial Information [Abstract]                      
Total revenues $ 167,178 $ 180,226 $ 172,536 $ 148,118 $ 166,332 $ 181,144 $ 170,975 $ 144,202 $ 668,058 $ 662,653 $ 617,648
Total operating expenses 138,141 146,160 131,124 117,297 128,686 142,266 149,981 116,772 532,722 537,705 493,328
Income before income taxes 29,037 34,066 41,413 30,820 37,646 38,878 20,994 27,430 135,336 124,948 124,320
Net income $ 66,469 $ 18,436 $ 23,134 $ 17,487 $ 25,568 $ 22,636 $ 11,101 $ 15,646 $ 125,526 $ 74,951 $ 70,304
Basic and diluted earnings per share $ 0.91 [1] $ 0.26 [1] $ 0.33 [1] $ 0.26 [1] $ 0.36 [1] $ 0.32 [1] $ 0.16 [1] $ 0.22 [1] $ 1.76 [1],[2] $ 1.06 [1],[2] $ 0.99 [2]
[1] The calculation of basic and diluted earnings per share were based on shares issued in connection with our initial public offering during November 2017 and give effect to the stock split effected in connection therein as if the stock split was effected January 1, 2016. See Note 1: Organization and Note 15: Earnings Per Share for further discussion.
[2] The calculation of basic and diluted earnings per share were based on shares issued in connection with our initial public offering during November 2017 and give effect to the stock split effected in connection therein as if the stock split is effected January 1, 2015. See Note 1: Organization and Note 15: Earnings Per Share for further discussion.