Details about Accumulated Other Comprehensive Income (Loss) Components (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of revenues	$ (1,112)	$ (1,575)
Financial income, net	460	729
Research and development	(5,996)	(5,039)
Sales and marketing	(2,393)	(2,355)
General and administrative	(2,040)	(1,838)
Income before taxes on income	2,593	2,038
Provision for income taxes	(608)	(333)
Net income	1,985	1,705
Reclassification out of accumulated other comprehensive income (loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income	1	192
Reclassification out of accumulated other comprehensive income (loss) | Unrealized gains (losses) on cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of revenues		4
Research and development	1	80
Sales and marketing		8
General and administrative		8
Income before taxes on income	1	100
Provision for income taxes		(10)
Net income	1	90
Reclassification out of accumulated other comprehensive income (loss) | Unrealized gains (losses) on available-for-sale marketable securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Financial income, net	(1)	143
Provision for income taxes	1	(41)
Net income		$ 102