Annual report pursuant to Section 13 and 15(d)

Statements of Cash Flows (Parenthetical)

v3.23.1
Statements of Cash Flows (Parenthetical) - shares
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Statement of Cash Flows [Abstract]      
Shares 167,780 167,780 167,780