Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity and Related Information

A summary of the Company’s stock option activity and related information is as follows:

	Stock Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value (000's)
Balance as of December 31, 2019		579,731		$	8.04		7.0	$	120
Granted		266,674			4.36
Exercised		(1,025	)		4.43			$	1
Canceled		(8,500	)		8.10
Balance as of June 30, 2020		836,880		$	6.87		7.4	$	-
Exercisable as of June 30, 2020		563,731		$	7.82		6.7	$	-

Grant Date Fair Value of Employee Stock Options Estimated Using Black-Scholes Option-Pricing Model with Weighted-Average Assumptions

The grant date fair value of employee stock options was estimated using a Black-Scholes option-pricing model with the following weighted-average assumptions:

	Six Months Ended June 30,
	2020			2019
Expected term (in years)		6.4			6.0
Expected volatility		75	%		75	%
Risk-free interest rate		1.0	%		2.5	%
Expected dividend yield		-	%		-	%

Total Stock-Based Compensation Expense Recognized in Condensed Consolidated Statements of Operations and Comprehensive Loss

Total stock-based compensation expense recognized in the condensed consolidated statements of operations and comprehensive loss is as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Research and development	$	38	$	31	$	59	$	46
General and administrative		328		82		511		127
Total stock-based compensation expense	$	366	$	113	$	570	$	173