国产福利资源在线播放 Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Adoption of ASU 2017-07 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	听	听	听	听
Operating income	$ 62,959	$ 49,306	$ 182,945	$ 108,575
Other income	听	18	听	31
As reported in prior year	听	听	听	听
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	听	听	听	听
Operating income	听	39,071	听	85,907
Other income	听	20	听	39
Retrospective Adjustment \| Accounting Standards Update 2017-07	听	听	听	听
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	听	听	听	听
Operating income	听	10,235	听	22,668
Other income	听	$ (2)	听	$ (8)