Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Segment	Mar. 31, 2013
Segment Reporting Information [Line Items]
Number of reporting segments	2
Revenue	$ 18,422	$ 11,974
Europe
Segment Reporting Information [Line Items]
Revenue	$ 800	$ 500
Procurian
Segment Reporting Information [Line Items]
Segments disposal date	Dec. 04, 2013
Channel Intelligence
Segment Reporting Information [Line Items]
Segments disposal date	Feb. 20, 2013
Investor Force
Segment Reporting Information [Line Items]
Segments disposal date	Jan. 29, 2013
WhiteFence
Segment Reporting Information [Line Items]
Segments disposal date	Oct. 28, 2013
Free Border
Segment Reporting Information [Line Items]
Segments disposal date	Oct. 18, 2013