Mortgage Notes Payable, Net	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Mortgage Notes Payable Disclosure	6. Mortgage Notes PayableOn March 26, 2021, the Company used available cash to repay the mortgage loan collateralized by its University Place property located in Cambridge, Massachusetts totaling approximately $0.9 million. The mortgage loan bore interest at a fixed rate of 6.94% per annum and was scheduled to mature on August 1, 2021. There was no prepayment penalty.