XML 42 R31.htm IDEA: XBRL DOCUMENT v3.21.1
Stock Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Stock Compensation [Abstract]  
Schedule Of Weighted-Average Assumptions Used To Determine The Fair Value Of Options

Three Months Ended

March 31, 2021

Stock Options

ESPP

Expected life

5.0 Years

0.5 Years

Expected stock price volatility

0.40

0.46

Risk-free interest rate

0.57%

0.09%

Summary Of Total Stock Compensation Expenses

Three Months Ended

March 31,

2021

2020

RSA, RSU, and PSU expense

$

2,050

$

2,156

Stock option and ESPP expense

587

533

Total stock compensation expense

$

2,637

$

2,689