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Stock Based Compensation
 6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
STOCK BASED COMPENSATION STOCK BASED COMPENSATION
During the six months ended June 30, 2021, the Company had the following activity related to stock based compensation:
Time Vested Restricted Stock Awards
The Company made the following awards of time vested restricted stock:
DateShares GrantedPlanGrant Date Fair Value Per Share Vesting Period
2/18/202149,550 2005 Employee Stock Plan$81.84 Ratably over 5 years from grant date
5/25/20217,680 2018 Non-Employee Director Stock Plan$78.18 Shares vested immediately

Performance-Based Restricted Stock Awards
    On February 18, 2021, the Company granted 18,900 performance-based restricted stock awards to certain executive level employees. These performance-based restricted stock awards were issued from the 2005 Employee Stock Plan and were determined to have a grant date fair value per share of $81.84. The number of shares to be vested are contingent upon the Company's attainment of certain performance criteria to be measured at the end of a three year performance period, ending December 31, 2023. The awards will vest upon the earlier of the date on which it is determined if the performance goal is achieved subsequent to the performance period or March 31, 2024.
    On March 12, 2021, the performance-based restricted stock awards that were awarded on February 15, 2018 vested at 85% of the maximum target shares awarded, or 13,005 shares.