In January 1968, LBJ's last year, 82 sailors of the Pueblo were captured by North Korea and held hostage with Captain Lloyd "Pete" Bucher, and abused and tortured for a year before release.
In the final 444 days of the Carter presidency, 52 Americans were held hostage in Tehran, and released only when Ronald Reagan raised his hand to take the oath.
In 2001, under George W. Bush, an EP-3 with 24 crew members was crashed by a Chinese fighter and forced to land on Hainan Island, where they were held for 11 days until we expressed "sorrow."
Compared to these hostage-takings, the Farsi Island incident does not seem serious. Its resolution within hours by Secretary of State John Kerry and Foreign Minister Mohammad Javad Zarif suggests that Iran wants nothing to halt implementation, just days away, of the nuclear deal that will release $100 billion in frozen assets.