Unrestricted Subsidiaries Unrestricted Subsidiaries (Results of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Total revenues	$ 141,361	$ 89,465	$ 254,978	$ 176,117
Cost of Goods Sold, Subscription	22,679	16,187	42,914	32,051
Gross Profit	118,682	73,278	212,064	144,066
Selling and Marketing Expense	35,213	13,860	64,851	28,721
Research and Development Expense	6,388	4,617	13,134	9,106
General and Administrative Expense	24,474	14,774	48,485	28,603
Operating Expenses	66,075	33,251	126,470	66,430
Operating Income (Loss)	52,607	40,027	85,594	77,636
Interest and other income (expense), net	(4,817)	809	(9,533)	91
Income before income taxes	47,790	40,836	76,061	77,727
Income Tax Expense (Benefit)	11,823	9,648	17,323	18,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	35,967	31,188	58,738	59,727
Ziff Davis, Inc [Member]
Total revenues	32,778		55,685
Cost of Goods Sold, Subscription	4,692		8,284
Gross Profit	28,086		47,401
Selling and Marketing Expense	18,176		30,964
Research and Development Expense	1,480		3,458
General and Administrative Expense	8,943		17,488
Operating Expenses	28,599		51,910
Operating Income (Loss)	(513)		(4,509)
Interest and other income (expense), net	(2,106)		(3,524)
Income before income taxes	(2,619)		(8,033)
Income Tax Expense (Benefit)	(1,128)		(3,460)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (1,491)		$ (4,573)