6. Restricted Cash

At March 31, 2018 and December 31, 2017, the Company had $0.5 million in restricted cash that serves as the security deposit on the lease of the Company’s current facility in Cambridge, Massachusetts (refer to Note 9). At March 31, 2018, approximately $0.2 million of the restricted cash was included within other current assets in the condensed consolidated balance sheets as it was expected to be refunded to the Company under the terms of the lease agreement. In April 2018, the Company received the $0.2 million refund from its landlord and $0.3 million remains in restricted cash. 

In accordance with the recently adopted accounting pronouncement ASU 2016-18, the following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets that sum to the total of the amounts shown in the condensed consolidated statement of cash flows as of March 31, 2018 (in thousands):