Schedule of Options Outstanding and Exercisable (Details) - Share-Based Payment Arrangement, Option [Member] - Biostage 2013 Equity Incentive Plan [Member] - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Amount, Outstanding	2,516,924
Weighted-average exercise price, Outstanding	$ 3.95
Weighted-average contractual life, Outstanding	8 years 21 days	7 years 8 months 4 days
Aggregate intrinsic value, Outstanding (in dollars)	$ 6,917
Amount, Granted	1,863,309
Weighted-average exercise price, Granted	$ 6.05
Amount, Canceled / forfeited	(593,333)
Weighted-average exercise price, Canceled / forfeited	$ 6.12
Amount, Outstanding	3,786,900	2,516,924
Weighted-average exercise price, Outstanding	$ 4.64	$ 3.95
Aggregate intrinsic value, Outstanding (in dollars)	$ 2,756	$ 6,917
Amount, Outstanding	1,998,552
Weighted-average exercise price, Options exercisable	$ 4.65
Weighted-average contractual life, Options exercisable	7 years 5 months 8 days
Aggregate intrinsic value, Options exercisable (in dollars)	$ 1,971
Amount, Options vested and expected to vest	3,687,482
Weighted-average exercise price, Options vested and expected to vest	$ 4.69
Weighted-average contractual life, Options vested and expected to vest	8 years 21 days
Aggregate intrinsic value, Options vested and expected to vest (in dollars)	$ 2,653