Kona Grill Inc. said its second-quarter normalized net income was a loss of $506,250, compared with a loss of $46,250 in the prior-year period.

Normalized net income excludes unusual gains or losses on a pre- and after-tax basis.

The normalized profit margin dropped to negative 1.2% from negative 0.1% in the year-earlier period.

Total revenue increased 19.5% year over year to $43.3 million from $36.2 million, and total operating expenses increased 21.5% year over year to $44.0 million from $36.3 million.

Reported net income came to a loss of $874,560, or a loss of 8 cents per share, compared to a loss of $112,710, or a loss of 1 cents per share, in the prior-year period.