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Stock-Based Compensation
 9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
The following table presents the Company's restricted stock unit ("RSU") activity for the nine months ended September 30, 2020:
Unvested Time-
Based RSUs		Unvested Performance-
Based RSUs		Weighted-Average Grant
Date Price Per Share
Outstanding as of January 1, 20201,295,691 1,389,642 $3.14 
Shares granted1,255,793 2,484,346 $3.14 
Shares vested(245,224)— $3.14 
Shares forfeited(49,742)(75,326)$3.14 
Outstanding as of September 30, 20202,256,518 3,798,662 $3.14 
On May 8, 2020, the board of directors approved a grant of time-based and performance-based RSUs under the Company's 2015 Incentive Award Plan at the most recent estimated NAV per share of $3.14 on May 1, 2019.
As of September 30, 2020, there was $7,576 of total unrecognized compensation expense related to unvested stock-based compensation arrangements that will vest through December 2022. The Company recognized stock-based compensation expense of $1,598 and $3,546 for the three and nine months ended September 30, 2020, respectively, and $1,289 and $3,454 for the three and nine months ended September 30, 2019, respectively.