Spent their time (ēukairoun). Imperfect active of eukaireō. A late word to have opportunity (eu, kairos) from Polybius on. In the N.T. only here and Mar 6:31. They had time for,.etc. This verse is an explanatory parenthesis by Luke.
Some new thing (tōi kainoteron). Literally “something newer” or “fresher” than the new, the very latest, the comparative of kainos. Demosthenes (Philipp. 1. 43) pictures the Athenians “in the agora inquiring if anything newer is said” (punthanomenoi kata tēn agoran ei tōi legetai neōteron). The new soon became stale with these itching and frivolous Athenians.