Segment Information - Additional Information (Detail)	3 Months Ended			6 Months Ended
	Jun. 30, 2015 USD ($) business	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) business segment	Jun. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | segment				2
Number businesses owned | business	4			4
Revenue	$ 33,536,000		$ 19,029,000	$ 64,128,000	$ 37,451,000
Income (loss) from discontinued operations, including gain on sale, net of tax (less than)	0		1,315,000	0	1,363,000
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	$ 1,700,000		$ 800,000	$ 3,300,000	$ 1,600,000