XML 19 R121.htm IDEA: XBRL DOCUMENT v3.20.1
Equity Compensation Plans - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares of common stock available for grant under Redwood's Incentive Plan (in shares) 3,326,806 3,637,480
Unrecognized compensation cost $ 31,840 $ 32,328
Weighted average amortization period remaining for equity awards 2 years  
Reversal of stock-based compensation expense previously recorded $ 1,000  
Shares of common stock to be purchased in aggregate for all employees (in shares) 600,000  
Number of shares purchased by employees (in shares) 452,021 430,772
Restricted Stock Awards    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unvested outstanding stock awards (in shares) 113,836 216,470
Number of stock awards granted (in shares) 0  
Number of stock awards vested (in shares) 101,063  
Number of stock awards forfeited (in shares) 1,571  
Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unvested outstanding stock awards (in shares) 409,311 275,173
Number of stock awards granted (in shares) 190,624  
Number of stock awards vested (in shares) 49,385  
Number of stock awards forfeited (in shares) 7,101  
Deferred Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unvested outstanding stock awards (in shares) 2,721,349 2,630,805
Number of stock awards granted (in shares) 310,473  
Number of stock awards vested (in shares) 1,218,304 1,286,063
Number of stock awards forfeited (in shares) 0  
Stock units distributed (in shares) 219,929  
Performance Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unvested outstanding stock awards (in shares) 839,070 839,070
Share-based compensation, vesting period (in years) 3 years