Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Stock-Based Compensation

Summary of stock-based compensation expense

The following table summarizes stock-based compensation expense (in thousands), which is included in operating or general and administrative expense, as appropriate, in the Consolidated Statements of Operations and Comprehensive Loss for the years ended December 31, 2020 and 2019:

	Year Ended December 31,
	2020		2019
Restricted stock awards	$	—	$	15
Restricted stock unit awards		703		893
Common stock awards		—		297
Total compensation expense	$	703	$	1,205

Summary of the Company's nonvested restricted stock unit awards

	Number of Restricted Stock Unit Awards		Weighted Average Grant Date Fair Value
Nonvested as of December 31, 2019		410,100	$	5.55
Granted		—	$	—
Vested		(236,100)	$	4.41
Forfeited		—	$	—
Nonvested as of December 31, 2020		174,000	$	7.10

Summary of common shares with immediate vesting granted to outside directors and employees

	Number of Common Stock Awards		Weighted Average Grant Date Fair Value
Year ended December 31, 2020		—	$	—
Year ended December 31, 2019		119,556	$	2.48