Schedule of repurchase of common stock (Details)

Schedule of repurchase of common stock (Details) - $ / shares		3 Months Ended	6 Months Ended	12 Months Ended
	Aug. 08, 2014	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Equity, Class of Treasury Stock [Line Items]
Total number of shares purchased	300,000	22,400	67,148	44,748
Total number of shares purchased as part of publicly announced plans or programs		67,148	67,148
Maximum number of shares that may yet be purchased under the plans or programs		232,852	232,852
Average price paid per share		$ 0.027
April 1 through April 30, 2023 [Member]
Equity, Class of Treasury Stock [Line Items]
Total number of shares purchased		0
Total number of shares purchased as part of publicly announced plans or programs		44,748	44,748
Maximum number of shares that may yet be purchased under the plans or programs		255,252	255,252
May 1 through May 31, 2023 [Member]
Equity, Class of Treasury Stock [Line Items]
Total number of shares purchased		0
Total number of shares purchased as part of publicly announced plans or programs		44,748	44,748
Maximum number of shares that may yet be purchased under the plans or programs		255,252	255,252
June 1 through June 30, 2023 [Member]
Equity, Class of Treasury Stock [Line Items]
Total number of shares purchased		22,400
Total number of shares purchased as part of publicly announced plans or programs		67,148	67,148
Maximum number of shares that may yet be purchased under the plans or programs		232,852	232,852
Average price paid per share		$ 0.027

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

Quarterly report pursuant to Section 13 or 15(d)

Schedule of repurchase of common stock (Details)