At-The-Market Offering and Firm Commitment Offering - Additional Information (Details) - USD ($)				12 Months Ended
	Sep. 04, 2019	Aug. 12, 2019	Dec. 28, 2018	Dec. 31, 2019
Class of Stock [Line Items]
Total shares of common stock sold (in shares)				3,528,532
Stifel Nicolaus Company Incorporated
Class of Stock [Line Items]
Total shares of common stock sold (in shares)				0
Percentage of commission paid			3.00%
Stifel Nicolaus Company Incorporated | Maximum
Class of Stock [Line Items]
Sale of common stock in an at- the-market offering			$ 75,000,000.0
Two Thousand Nineteen Sales Agreement
Class of Stock [Line Items]
Sale of common stock in an at- the-market offering		$ 25,000,000.0
Total shares of common stock sold (in shares)				1,374,686
Percentage of commission paid		3.00%
Underwriting Agreement | Public Stock Offering
Class of Stock [Line Items]
Number of shares issued				2,153,846
Underwriting Agreement | Over-Allotment Option
Class of Stock [Line Items]
Number of shares issued	323,077