XML 71 R59.htm IDEA: XBRL DOCUMENT v3.22.0.1
LEGACY ESS REDEEMABLE CONVERTIBLE PREFERRED STOCK - Schedule of Purchase Rights Activity (Details) - shares
 1 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2021
Class of Warrant or Right [Line Items]    
Warrants or rights at beginning of period (in shares)   0
Rights exercised (in shares)   955,374
Warrants or rights at end of period (in shares)   11,461,247
Legacy ESS    
Class of Warrant or Right [Line Items]    
Warrants or rights at beginning of period (in shares)   2,560,568
Rights exercised (in shares)   24,581,852
Warrants or rights at end of period (in shares)   0
Legacy ESS | Series C-2 Redeemable Convertible Preferred Stock Purchase Rights    
Class of Warrant or Right [Line Items]    
Warrants or rights at beginning of period (in shares)   39,971,716
Rights forfeited (in shares)   26,231,295
Rights exercised (in shares) 5,746,003 13,740,421
Warrants or rights at end of period (in shares)   0