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Reportable Segments - Financial Information (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) segment | Jan. 01, 2017 USD ($) | Oct. 01, 2017 USD ($)
Financial information regarding reportable segments |  |  |
Number of renamed reportable segments | segment | 2 |  |
Revenue | $ 759,749 | $ 668,851 |
Income (loss) from operations | 48,589 | 39,855 |
Total Assets | 1,970,987 |  | $ 1,902,745
Operating segment | GSG |  |  |
Financial information regarding reportable segments |  |  |
Revenue | 442,772 | 362,859 |
Income (loss) from operations | 39,125 | 30,168 |
Total Assets | 489,893 |  | 378,839
Operating segment | CIG |  |  |
Financial information regarding reportable segments |  |  |
Revenue | 331,513 | 318,071 |
Income (loss) from operations | 21,294 | 21,544 |
Total Assets | 481,924 |  | 518,697
Operating segment | RCM |  |  |
Financial information regarding reportable segments |  |  |
Revenue | 6,807 | 8,231 |
Income (loss) from operations | (1,158) | (3,042) |
Total Assets | 33,030 |  | 33,620
Elimination of inter-segment revenue |  |  |
Financial information regarding reportable segments |  |  |
Revenue | (21,343) | (20,310) |
Corporate |  |  |
Financial information regarding reportable segments |  |  |
Income (loss) from operations | (10,672) | $ (8,815) |
Total Assets | $ 966,140 |  | $ 971,589

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