Segment Information - Additional Information (Detail)	3 Months Ended			9 Months Ended
	Sep. 30, 2015 USD ($) business	Sep. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Sep. 30, 2015 USD ($) business segment	Sep. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | segment				2
Number businesses owned | business	4			4
Revenue	$ 34,140,000	$ 20,762,000		$ 98,268,000	$ 58,213,000
Income (loss) from discontinued operations, including gain on sale, net of tax (less than)	0	2,426,000		0	3,789,000
Procurian
Segment Reporting Information [Line Items]
Income (loss) from discontinued operations, including gain on sale, net of tax (less than)			$ 100,000.0
Europe and Canada
Segment Reporting Information [Line Items]
Revenue	$ 1,400,000	$ 1,100,000		$ 4,700,000	$ 2,700,000