CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net revenue:
Online sponsorship and advertising	$ 20,135	$ 18,589
Registry services	1,174	1,014
Merchandise	3,818	5,609
Publishing and other	5,146	4,567
Total net revenue	30,273	29,779
Cost of revenue:
Online sponsorship and advertising	495	414
Merchandise	2,477	3,058
Publishing and other	1,724	1,392
Total cost of revenue	4,696	4,864
Gross profit	25,577	24,915
Operating expenses:
Product and content development	6,872	6,592
Sales and marketing	9,976	11,153
General and administrative	4,819	5,634
Depreciation and amortization	1,103	946
Total operating expenses	22,770	24,325
Income from operations	2,807	590
Loss in equity interests	(58)	0
Interest and other income (expense), net	13	(4)
Income before income taxes	2,762	586
Provision for income taxes	1,089	234
Net income	1,673	352
Plus: net loss attributable to noncontrolling interest	0	45
Net income attributable to XO Group Inc.	$ 1,673	$ 397
Net income per share attributable to XO Group Inc. common stockholders:
Basic (usd per share)	$ 0.07	$ 0.02
Diluted (usd per share)	$ 0.07	$ 0.02
Weighted average number of shares used in calculating net earnings per share
Basic (shares)	24,460	25,519
Diluted (shares)	25,254	26,092