Unrestricted Subsidiaries Unrestricted Subsidiaries (Results of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Total revenues	$ 127,788	$ 93,246	$ 382,766	$ 269,363
Cost of Goods Sold, Subscription	21,801	16,303	64,715	48,354
Gross Profit	105,987	76,943	318,051	221,009
Selling and Marketing Expense	34,787	15,190	99,638	43,910
Research and Development Expense	6,000	4,692	19,134	13,798
General and Administrative Expense	25,892	14,784	74,377	43,387
Operating Expenses	66,679	34,666	193,149	101,095
Operating Income (Loss)	39,308	42,277	124,902	119,914
Interest and other income (expense), net	(4,576)	(2,747)	(14,109)	(2,657)
Income before income taxes	34,732	39,530	110,793	117,257
Income Tax Expense (Benefit)	7,105	7,880	24,428	25,880
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	27,627	31,650	86,365	91,377
Ziff Davis, Inc [Member]
Total revenues	33,522		89,207
Cost of Goods Sold, Subscription	4,398		12,682
Gross Profit	29,124		76,525
Selling and Marketing Expense	18,085		49,049
Research and Development Expense	943		4,401
General and Administrative Expense	9,225		26,713
Operating Expenses	28,253		80,163
Operating Income (Loss)	871		(3,638)
Interest and other income (expense), net	(2,911)		(6,435)
Income before income taxes	(2,040)		(10,073)
Income Tax Expense (Benefit)	1,624		(1,836)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (3,664)		$ (8,237)