XML 24 R49.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Stock-based Compensation Expense Restricted and Performance Stock Unit activity (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures [Abstract]  
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

Pursuant to the Portland General Electric Company Stock Incentive Plan as amended and restated effective February 13, 2018 (the Plan), the Company may grant a variety of equity-based awards, including restricted stock units (RSUs) with time-based vesting conditions (time-based RSUs) and performance-based vesting conditions (performance-based RSUs), to non-employee directors, officers, or certain key employees. RSU activity is summarized in the following table:
 
Units
 
Weighted Average
Grant Date
Fair Value
Nonvested units as of December 31, 2016
458,792

 
$
34.68

Granted
202,145

 
41.96

Forfeited
(64,840
)
 
39.57

Vested
(196,721
)
 
31.78

Nonvested units as of December 31, 2017
399,376

 
37.98

Granted
198,864

 
37.99

Forfeited
(8,556
)
 
39.73

Vested
(160,771
)
 
36.77

Nonvested units of December 31, 2018
428,913

 
38.43

Granted
210,555

 
49.06

Forfeited
(9,041
)
 
41.68

Vested
(167,037
)
 
37.52

Nonvested units as of December 31, 2019
463,390

 
43.52


Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] with the following weighted average assumptions:
 
2019
 
2018
 
2017
Risk-free interest rate
 
 
2.5
%
 
 
 
2.4
%
 
 
 
1.5
%
Expected term (in years)
 
 
3.0
 
 
 
3.0
 
 
 
3.0
Volatility
14.8
%
-
74.5
%
 
14.7
%
-
21.8
%
 
15.6
%
-
22.9
%