Equity and Cost Method Businesses - Additional Information (Detail) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Schedule Of Equity Method Investments [Line Items]
Net asset of equity method	$ 1,000,000				$ 1,000,000				$ 1,300,000
Net asset allocated of equity method goodwill	400,000				400,000				600,000
Allocated of equity method intangible	600,000				600,000				700,000
Amortized period					5 years
Amortization of intangible assets	48,000	[1]	48,000	[2]	96,000	[1]	69,000	[2]
Carrying value of holdings in cost method companies	19,600,000				19,600,000				19,600,000
Anthem
Schedule Of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	9.00%				9.00%
Less Than
Schedule Of Equity Method Investments [Line Items]
Amortization of intangible assets	$ 100,000		$ 100,000		$ 100,000		$ 100,000
Equity method investment, ownership percentage	50.00%				50.00%

[1] Includes Acquirgy and CIML

[2] Includes Acquirgy, CIML (from February 20, 2013, the date of deconsolidation), Freeborders, Inc. (“Freeborders”) and WhiteFence