Operating Leases

12 Months Ended

Dec. 31, 2018

The Company leases office space located in New York, New York and Princeton, New Jersey under operating lease arrangements. The lease for the Company's New York office space expires at the end of June 2020, whereas the sublease for the Company's Princeton office space expires in March 2020. Future minimum rental commitments under non-cancelable operating leases in effect as of December 31, 2018, are as follows:



2019	$	1,040
2020	504
Total	$	1,544

Rent expense is calculated on the straight-line basis and amounted to $0.8 million, $3.6 million and $3.0 million for the years ended December 31, 2018, 2017 and 2016, respectively.