Condensed Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Stock-based compensation	$ 3,400	$ 1,215	$ 6,656	$ 1,950
Cost of subscription services [Member]
Stock-based compensation	54	6	107	9
Cost of professional services and other [Member]
Stock-based compensation	580	135	1,162	228
Research and development [Member]
Stock-based compensation	874	271	1,761	466
Sales and marketing [Member]
Stock-based compensation	760	299	1,536	482
General and administrative [Member]
Stock-based compensation	$ 1,132	$ 504	$ 2,090	$ 765