With sales on mobile devices growing at a triple-digit year-over-year clip, department store chain The Bon-Ton Stores Inc. will devote more resources to capturing those shoppers.

Bon-Ton, No. 169 in the Internet Retailer 2016 Top 500 Guide, does not break out online sales in its quarterly earnings reports. But CEO Kathy Bufano told analysts in discussing first quarter earnings that omnichannel sales grew more than 20% year over year during the quarter, with mobile growing “in the triple digits.” She did not provide further detail. Bon-Ton defines omnichannel as a combination of online sales and sales through its Let Us Find It program in which store clerks locate out-of-stock items for shoppers and order the products for shipment to the customer.

“36% of our omnichannel traffic came through our mobile site,” Bufano told analysts on the call, according to a transcript from Seeking Alpha. “We have a number of upgrades to our mobile interface underway and more mobile-friendly access to our Your Rewards loyalty program benefits. On our mobile apps, we are adding a streamlined mobile checkout process.”

Bufano reiterated her desire to expand Bon-Ton’s buy online, pick up in store capabilities to include all of the company’s 267 stores by September, a move she hopes will turn around sliding store sales. “We see this as a great opportunity to drive traffic into our retail stores, as well as capture incremental spend,” she said. Bon-Ton operates e-commerce sites and stores under the Bergner’s, Boston Store, Carson’s, Elder-Beerman, Herberger’s and Younkers names.

For the first quarter ended April 30, Bon-Ton reported:

• Net sales of $591.0 million, down 3.3% from $610.9 million last year.
• A net loss of $37.8 million, compared to a net loss of $34.1 million last year.
• A year-over-year comparable sales decline of 2.9%.