Condensed Consolidated Statements of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Includes related party revenue (Note 13)	$ 42	$ 880
Stock-based compensation included in above line items:
Stock-based compensation	1,699	947
Cost of subscription and support revenue [Member]
Stock-based compensation included in above line items:
Stock-based compensation	68	20
Amortization of acquired intangible assets included in above line items:
Amortization of acquired intangible assets	253
Cost of professional services and other revenue [Member]
Stock-based compensation included in above line items:
Stock-based compensation	51	22
Research and development [Member]
Stock-based compensation included in above line items:
Stock-based compensation	320	81
Amortization of acquired intangible assets included in above line items:
Amortization of acquired intangible assets	10
Sales and marketing [Member]
Stock-based compensation included in above line items:
Stock-based compensation	575	252
Amortization of acquired intangible assets included in above line items:
Amortization of acquired intangible assets	167
General and administrative [Member]
Stock-based compensation included in above line items:
Stock-based compensation	$ 685	$ 572