Balance as of January 1, 2025

  ​ ​ ​

$

206,750

Recognition of costs on contracts where performance obligations completed during the period

​

(206,750)

Deferral of costs on contracts where performance obligations were not complete

​

$

167,126

Balance as of March 31, 2025

​

​

167,126

​

​

​

​

Balance as of January 1, 2026

​

​

303,910

Recognition of costs on contracts where performance obligations completed during the period

​

​

(287,375)

Deferral of costs on contracts where performance obligations were not complete

​

$

128,806

Balance as of March 31, 2026

​

$

145,341

Balance as of January 1, 2025

  ​ ​ ​

$

602,469

Recognition of revenue recorded as a contract liability as of January 1, 2025

​

(389,375)

Customer advance payments

​

759,308

Balance as of March 31, 2025

​

972,402

​

​

​

​

Balance as of January 1, 2026

​

772,013

Recognition of revenue recorded as a contract liability as of January 1, 2026

​

(490,756)

Customer advance payments

​

1,362,824

Balance as of March 31, 2026

​

$

1,644,081