CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net revenue:
Online sponsorship and advertising	$ 70,067	$ 60,441	$ 55,731
Registry services	6,398	6,727	10,018
Merchandise	25,420	26,246	24,674
Publishing and other	22,372	19,467	15,993
Total net revenue	124,257	112,881	106,416
Cost of revenue:
Online sponsorship and advertising	2,104	1,695	2,689
Merchandise	15,661	14,282	12,723
Publishing and other	7,321	7,207	6,206
Total cost of revenue	25,086	23,184	21,618
Gross profit	99,171	89,697	84,798
Operating expenses:
Product and content development	24,276	22,812	20,516
Sales and marketing	38,738	35,489	31,260
General and administrative	20,660	19,518	19,095
Long-lived asset impairment charges	716		10,702
Depreciation and amortization	4,702	5,212	9,847
Total operating expenses	89,092	83,031	91,420
Income (loss) from operations	10,079	6,666	(6,622)
Loss in equity interest	(269)	(357)	(81)
Interest and other income, net	203	203	676
Income (loss) before income taxes	10,013	6,512	(6,027)
Provision (benefit) for income taxes	4,025	2,858	(1,153)
Net income (loss)	5,988	3,654	(4,874)
Plus: net loss attributable to non-controlling interest	52
Net income (loss) attributable to XO Group Inc.	$ 6,040	$ 3,654	$ (4,874)
Net income (loss) per share attributable to XO Group Inc. common shareholders:
Basic	$ 0.21	$ 0.11	$ (0.15)
Diluted	$ 0.20	$ 0.11	$ (0.15)
Weighted average number of shares used in calculating net earnings per share
Basic	29,060	32,768	32,092
Diluted	29,692	33,660	32,092