Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Information (Unaudited) (Details)

v3.8.0.1
Quarterly Financial Information (Unaudited) (Details) - USD ($)
$ 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
Quarterly Financial Information Disclosure [Abstract]                      
Net revenue $ 133,546 $ 138,211 $ 140,498 $ 141,200 $ 140,683 $ 142,765 $ 143,656 $ 143,268 $ 553,455 $ 570,372 $ 563,356
Operating income (loss) 14,647 12,896 (11,848) 16,609 21,101 18,486 15,258 12,804 $ 32,304 $ 67,649 $ 63,725
Net loss $ (14,642) $ (25,536) $ (50,104) $ (21,013) $ (16,586) $ (23,002) $ (16,509) $ (20,210)