Summary of Significant Accounting Policies - Summary of Effects of New Guidance on Consolidated Balance Sheets and Statements of Comprehensive Income (Loss) (Detail) (USD $)	6 Months Ended		12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2011
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Revenue					$ 6,400,000
Revenues:
Subscription	64,886,000	33,191,000	349,804,000	204,526,000	79,191,000
Professional services and other	8,489,000	4,753,000	74,846,000	39,186,000	13,450,000
Total revenues	73,375,000	37,944,000	424,650,000	243,712,000	92,641,000
New Accounting Pronouncement or Change in Accounting Principle, Current Period Disclosures, Deferred Revenue, Amount					$ 6,400,000