With the Detroit Lions completing their mandatory minicamp today, the team is essentially on vacation for the next month. The players will still be working out and the coaches will almost certainly be spending time preparing for training camp and the upcoming season, but the players aren't required to be around the facility until next month.
The specific report dates for when the players will need to be back for training camp were announced this afternoon. From Tim Twentyman:
Rookies and injured players are scheduled to report to training camp July 23. All others players Thurs. July 26.— Tim Twentyman (@ttwentyman) June 14, 2012
Anwar Richardson reported last month that the Lions are expected to report on July 26 and hit the field on July 27, so this announcement meshes with previous news. The only difference is that rookies and injured players will report three days before everybody else.