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Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Segment	Mar. 31, 2014
Segment Reporting Information [Line Items]
Number of reporting segments	2us-gaap_NumberOfReportableSegments
Revenue	$ 30,592us-gaap_Revenues	$ 18,422us-gaap_Revenues
Income (loss) from discontinued operations, including gain on sale, net of tax		48
Procurian \| Maximum
Segment Reporting Information [Line Items]
Income (loss) from discontinued operations, including gain on sale, net of tax		100
Europe and Canada
Segment Reporting Information [Line Items]
Revenue	$ 1,600	$ 800

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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