Fair Value Measurements - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($) contingent_consideration_obligation
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of contingent consideration obligations | contingent_consideration_obligation				3
Payment for contingent consideration obligations		$ 1,870,000	$ 0
Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	$ 0	0
Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	2,000,000.0	2,000,000.0
Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	1,200,000	1,200,000
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	1,799,000	1,799,000		$ 3,088,000
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability	1,799,000	1,799,000		$ 3,088,000
FolioDynamix
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Number of contingent consideration obligations | contingent_consideration_obligation				2
Payment for contingent consideration obligations		1,900,000
Excess in settlement of contingent consideration liability		100,000
FolioDynamix | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Contingent consideration liability				$ 1,900,000
Impairment related and other | KMI
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Excess in settlement of contingent consideration liability	$ 200,000	$ 700,000