Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Amounts of minimum future annual rental payments under non-cancellable operating leases in each of the next five years and thereafter are as follows:



Fiscal Year	Amount $
2018	15,271
2019	24,802
2020	28,768
2021	29,497
2022	29,016
Thereafter	235,667
Total future minimum lease payments	363,021