Expedia CEO and chief financial officer have quit after clashing with the board over strategy. The company said Wednesday that the resignations of CEO Mark Okerstrom and CFO Alan Pickerill took effect immediately. Chairman Barry Diller will help run the travel company while it searches for permanent replacements.

A reorganization plan pushed by the departing executives was sound in concept but led to a loss of focus, disappointing earnings and a “lackluster” short-term outlook, said Diller, “The Board disagreed with that outlook, as well as the departing leadership’s vision for growth, strongly believing the Company can accelerate growth in 2020.”

Traffic to Expedia also took a hit because of lower performance than expected on search engines like Google, where it was suggested that people click more often on higher-placed, paid links.

Diller and Vice Chairman Peter Kern will manage day-to-day operations, and Chief Strategy Officer Eric Hart will be acting CFO.

Okerstrom joined Expedia in 2006, rose to CFO in 2011 and was named CEO in August 2017, when Dara Khosrowshahi left to become the CEO of Uber. Pickerill, who joined in 2008, became CFO at around the same time.

Expedia said the board also authorized the buyback of up to 20 million more shares on top of 9 million shares that can be repurchased under a previous decision.

At the close of trading Tuesday, the shares had lost 12% this year, and were pummeled after the company reported disappointing third-quarter results last month.

Expedia has announced a new share repurchase plan, making a total of 29 million available. Diller, who became chairman in 2002 when his InterActiveCorp acquired a controlling interest in Expedia, said he would buy additional shares in the group “as a tangible sign of my faith in and commitment to Expedia’s long-term future.”

The Bellevue, Washington-based company runs travel sites including Expedia.com, Hotels.com and Travelocity.