Acknowledgement: We are grateful for the exchanges with Cliff Binstock, the CEO of XBRL Cloud, who helped us understand the data of XBRL filing errors his company compiled and we used in our study. provider, more than 4000 filing errors have been identified. We examine the overall changing pattern of the errors to understand whether the vast number of errors may hamper the transition to the interactive data reporting. Using a sample of 4532 filings that contain 4260 errors, we document significant learning curves exhibited by the SEC XBRL filing environment, by the filers, and by the XBRL software vendors. Specifically, we find that the number of errors per filing is significantly decreasing as more quarters pass, when a company files more times, and when a higher version of software is used, suggesting that the SEC, the company filers, and the technology community all learn from their experiences and therefore the future filings are improved. Our findings provide evidence to encourage the regulatory body, the filers, and the XBRL technology supporting community to embrace the new disclosure requirement in financial reporting. The significantly decreased number of errors also helps address the information users' concerns regarding the data quality of XBRL filings.