Condensed Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenues:
Total revenues	$ 161,253	$ 134,124
Cost of revenues (including share-based compensation of $83 and $154 for the three months of 2015 and 2014, respectively)	28,186	23,388
Gross profit	133,067	110,736
Operating expenses:
Sales and marketing (including share-based compensation of $584 and $491 for the three months of 2015 and 2014, respectively)	37,590	32,959
Research, development and engineering (including share-based compensation of $194 and $140 for the three months of 2015 and 2014, respectively)	8,447	7,213
General and administrative (including share-based compensation of $2,143 and $1,599 for the three months of 2015 and 2014, respectively)	46,500	28,979
Total operating expenses	92,537	69,151
Income (loss) from operations	40,530	41,585
Interest expense (income), net	10,313	4,948
Other expense (income), net	(784)	(319)
Income (loss) before income taxes	31,001	36,956
Income Tax Expense (Benefit)	9,124	8,191
Net income attributable to j2 Global, Inc. common shareholders	21,877	28,765
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21,877	$ 28,765
Net income per common share:
Basic	$ 0.45	$ 0.61
Diluted	$ 0.45	$ 0.60
Weighted average shares outstanding:
Basic	47,422,396	46,365,158
Diluted	47,766,088	46,765,732
Cash dividends paid per common share	$ 0.2925	$ 0.2625