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Discontinued Operations - Summary of Cash Flow of the Entertainment Segment (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Net cash (used in) provided by discontinued operating activities $ (734) $ 14,275
Net cash used in discontinued investing activities (84) (178)
Net cash used in discontinued financing activities (23,596) (4,592)
Operating Segments | Entertainment    
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]    
Net cash (used in) provided by discontinued operating activities (734) 14,275
Net cash used in discontinued investing activities (84) (178)
Net cash used in discontinued financing activities $ (23,596) $ (4,592)