Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended						12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended		12 Months Ended					1 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2012 MSDSonline	Mar. 30, 2012 MSDSonline	Dec. 31, 2012 Minimum	Dec. 31, 2009 Minimum	Mar. 30, 2012 Minimum MSDSonline	Dec. 31, 2012 Maximum	Dec. 31, 2009 Maximum	Mar. 30, 2012 Maximum MSDSonline	Jul. 31, 2010 Procurian	Dec. 31, 2012 Procurian	Dec. 31, 2011 Procurian	Dec. 31, 2010 Procurian	Dec. 31, 2009 Procurian	Jul. 01, 2010 Procurian Eliminated	Jul. 01, 2010 Procurian Minimum	Jul. 01, 2010 Procurian Maximum	Dec. 31, 2010 Investorforce	Dec. 31, 2012 Investorforce	Dec. 31, 2012 GovDelivery
Income Taxes [Line Items]
Income tax benefit (expense)	$ 334,000	$ 70,000	$ 392,000	$ 540,000	$ (4,926,000)	$ (1,338,000)	$ (963,000)	$ 2,940,000	$ 1,336,000	$ (4,287,000)	$ 362,000										$ 4,800,000			$ 6,300,000
Current tax expense									1,203,000	29,000	(429,000)
Net deferred tax benefit									133,000	(4,316,000)	791,000
Income tax benefit related to reconciliation of tax depreciation	800,000								800,000
Net deferred tax benefit related to release of valuation allowances																						4,500,000
Interest received on income tax refund										200,000	700,000											200,000
Provision of return adjustments											400,000
Net operating loss carryback																													100,000
Annual limit on utilization of carry forwards, amount available	26,000,000				159,700,000				26,000,000	159,700,000	29,000,000	14,500,000									3,100,000										1,000,000
Net operating loss carryforward expiration year															2026	2012		2029	2023								2022	2023
Net operating loss carry forwards	70,000,000								70,000,000																	2,600,000				20,100,000	2,800,000
Net deferred tax liability																															4,800,000
Net operating loss carryforwards are expected to be available																						68,800,000
Net operating loss carryforwards available																						37,300,000
Deferred tax benefit related to reduction of valuation allowances																							4,500,000
Decrease in deferred tax expense that offset taxable income																						8,300,000	6,700,000	4,800,000
Net operating loss														50,900,000
Net operating loss expire period																	2019			2031
Annual limitations on net operating loss													1,700,000
Annual limitation of expected net operating loss													47,400,000
Liability for unrecognized income tax expenses																									$ 300,000