SEGMENT, GEOGRAPHIC AND CUSTOMER INFORMATION

We operate as a single reportable segment in manufacturing, marketing, selling and distributing a wide variety of branded and private label dairy and dairy case products. We operate 58 manufacturing facilities which are geographically located largely based on local and regional customer needs and other market factors. We manufacture, market and distribute a wide variety of branded and private label dairy case products, including fluid milk, ice cream, cultured dairy products, creamers, ice cream mix and other dairy products to retailers, distributors, foodservice outlets, educational institutions and governmental entities across the United States. Our products are primarily delivered through what we believe to be one of the most extensive refrigerated direct-to-store delivery systems in the United States. Our Chief Executive Officer evaluates the performance of our business based on operating income or loss before facility closing and reorganization costs, litigation settlements, impairments of long-lived assets, gains and losses on the sale of businesses and certain other non-recurring gains and losses.

All results herein have been recast to present results on a comparable basis. These changes had no impact on consolidated net sales and operating income. The amounts in the following tables include our operating results and are obtained from reports used by our executive management team and do not include any allocated income taxes or management fees. There are no significant non-cash items reported in segment profit or loss other than depreciation and amortization.



	Year Ended December 31,
	2018			2017			2016
	(in thousands)
Operating income (loss):
Dean Foods	$	(46,015	)	$	143,147		$	276,950
Facility closing and reorganization costs, net	(74,992		)	(24,913		)	(8,719		)
Impairment of goodwill and long-lived assets	(204,414		)	(30,668		)	—
Other operating income	2,289			—			—
Equity in earnings (loss) of unconsolidated affiliate	7,939			—			—
Total	(315,193		)	87,566			268,231
Other (income) expense:
Interest expense	56,443			64,961			66,795
Other (income) expense, net	2,877			1,362			(1,215		)
Consolidated income (loss) from continuing operations before income taxes	$	(374,513	)	$	21,243		$	202,651

Geographic Information — Net sales related to our foreign operations comprised less than 1% of our consolidated net sales during the years ended December 31, 2018, 2017 and 2016. None of our long-lived assets are associated with our foreign operations.

Significant Customers — Our largest customer accounted for approximately 15.3%, 17.5%, and 16.7% of our consolidated net sales in 2018, 2017 and 2016, respectively. As disclosed in Note 1, on a prospective basis, effective January 1, 2018, we began reporting sales of excess raw materials within the net sales line of our Consolidated Statements of Operations. As such, the computation, and comparison, of the percentages of our largest customer between fiscal periods is impacted by the change in the presentation of excess raw material sales.