XML 80 R66.htm IDEA: XBRL DOCUMENT v3.8.0.1
Canadian ATG Spectrum License - Summary of Amortization Expense (Detail) - License Agreement [Member]
$ in Thousands
9 Months Ended
Sep. 30, 2017
USD ($)
Schedule Of Estimated Future Amortization Expense [Line Items]  
2017 (period from October 1 to December 31) $ 26
2018 104
2019 104
2020 104
2021 104
Thereafter $ 1,632