CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Apr. 01, 2017	Apr. 02, 2016
Service revenues, net	$ 261,476	$ 243,768
Product sales and other, net	67,587	63,142
Revenues, net	329,063	306,910
Cost of services	124,885	124,672
Cost of product sales and other	40,081	32,565
Cost of revenues	164,966	157,237
Gross profit	164,097	149,673
Marketing expenses	86,429	86,514
Selling, general and administrative expenses	47,435	49,602
Operating income	30,233	13,557
Interest expense	28,142	30,025
Other expense (income), net	640	(65)
Income (loss) before income taxes	1,451	(16,403)
Benefit from income taxes	(9,128)	(5,603)
Net income (loss)	10,579	(10,800)
Net loss attributable to the noncontrolling interest	74	47
Net income (loss) attributable to Weight Watchers International, Inc.	$ 10,653	$ (10,753)
Earnings (Net Loss) Per Share attributable to Weight Watchers International, Inc.
Basic	$ 0.17	$ (0.17)
Diluted	$ 0.16	$ (0.17)
Weighted average common shares outstanding
Basic	63,978	63,546
Diluted	66,527	63,546

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate cost of goods produced and sold and services rendered during the reporting period.