Segments - Reconciliation of Operating Loss to Cool Holdings as Reported (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating loss:
Total consolidated operating loss	$ (3,514)	$ (3,740)	$ (9,134)	$ (4,853)
Operating Segments [Member]
Operating loss:
Total consolidated operating loss	(1,362)	(122)	(4,916)	(387)
Unallocated Expenses [Member]
Operating loss:
Total consolidated operating loss	$ (2,152)	$ (3,618)	$ (4,218)	$ (4,466)