Defined Contribution Plan	9 Months Ended
	Sep. 30, 2020
Retirement Benefits [Abstract]
Defined Contribution Plan	Defined Contribution PlanThe Company sponsors a defined contribution pension plan, the Hartman 401(k) Profit Sharing Plan, covering substantially all of its full-time employees who are at least 21 years of age. Participants may annually contribute up to 100% of pretax annual compensation and any applicable catch-up contributions, as defined in the plan and subject to deferral limitations as set forth in Section 401(k) of the Internal Revenue Code. Participants may also contribute amounts representing distributions from other qualified benefit or defined contribution plans. The Company may make discretionary matching contributions. For the year ended December 31, 2019, the Company matched $398,000 in the form of Company stock.