Annual report pursuant to Section 13 and 15(d)

Retirement plans

Retirement plans
12 Months Ended
Dec. 31, 2020
Retirement Benefits [Abstract]  
Retirement plans Retirement plansWe have a defined contribution retirement plan (the “Plan”), which qualifies under Section 401(k) of the Internal Revenue Code (IRC). Under the Plan, employees meeting certain requirements may elect to contribute a percentage of their salary up to the maximum allowed by the IRC. We matched a variable amount based on participant contributions up to a maximum of 4.5% of each participant’s salary. In May 2020, we discontinued the matching of employee contributions for those employees not covered under a collective bargaining agreement. We contributed approximately $124,507 and $265,280 in matching contributions to the Plan in 2020 and 2019, respectively.