Advertising, promotional and selling expenses decreased by $10.4 million from the comparable13-week period in 2017, primarily due to lower expenditures on media advertising and point of sale marketing, partially offset by increased local marketing, higher salaries and benefits costs and increased freight to distributors due to higher rates and volumes and less efficient truck utilization.
General and administrative expenses increased by $6.1 million from the comparable13-week period in 2017, primarily due to increases in salaries and benefits and stock compensation costs.
The Company’s effective tax rate for the quarter ended December 29, 2018 increased to a provision of 24.7% from a benefit of 107.7% in the comparable period in 2017. This increase was primarily due to the fourth quarter 2017 favorableone-time tax benefit of $1.72 per diluted share related to the Tax Cuts and Jobs Act of 2017.
Full Year 2018 Summary of Results
Depletions increased approximately 13% from the comparable52-week period in 2017, reflecting increases in the Company’s Truly Hard Seltzer, Twisted Tea and Angry Orchard brands, partially offset by decreases in its Samuel Adams brand.
Shipment volume was approximately 4.3 million barrels, a 13.7% increase from the comparable52-week period in 2017.
Gross margin at 51.4% represented a decrease from the 52.1% margin realized in the comparable52-week period in 2017, primarily as a result of higher processing costs due to increased production at third party breweries, higher temporary labor at Company-owned breweries and higher packaging costs, partially offset by price increases, cost saving initiatives at Company-owned breweries and lower excise taxes.
Advertising, promotional and selling expenses increased $46.2 million from the comparable52-week period in 2017, primarily due to increased planned investments in local marketing, media andpoint-of-sale, higher salary and benefit costs and increased freight to distributors due to higher rates and volumes and less efficient truck utilization.
General and administrative expenses increased by $17.7 million from the comparable52-week period in 2017, primarily due to increases in salaries and benefits costs, stock compensation costs and legal and consulting costs.
Impairment of long-lived assets decreased $1.8 million from the comparable52-week period in 2017, primarily due to a decrease in write-downs of brewery equipment at the Company’s Pennsylvania and Cincinnati breweries.