Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended					0 Months Ended	6 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 E5 Global Holdings, Inc. [Member]	Oct. 02, 2013 E5 Global Holdings, Inc. [Member]	Jun. 30, 2014 E5 Global Holdings, Inc. [Member] Maximum [Member]	May 16, 2014 Darwin [Member]	Jun. 30, 2014 Darwin [Member]	May 16, 2014 Darwin [Member]	May 16, 2013 Darwin [Member]	Jun. 30, 2014 Darwin [Member] Acquired customer relationships [Member]	Jun. 30, 2014 Darwin [Member] Non-compete agreements [Member]	Jun. 30, 2014 Darwin [Member] Trade name [Member]
Business Acquisition [Line Items]
Acquisition by cash payment					$ 1,400,000			$ 2,400,000
Company acquired shares, percentage										100.00%
Total acquisition date fair value of the consideration											2,396,000
Acquired intangible assets									800,000		824,000	700,000	100,000	44,000
Percentage of discounted cash flows									16.00%
Acquired finite lived intangible assets amortization period												5 years	5 years
Transaction costs related to the acquisition			200,000						100,000
Revenue								500,000
Shares acquired						100.00%
Fair value of deferred cash payments					200,000
Additional cash consideration payable							2,200,000
Period of cash to be paid					2 years
Estimated liability					300,000
Business Acquisition Deferred Consideration Early Release					200,000
Contingent payments					200,000
Restructuring, impairment and other charges reduction	$ (882,000)	$ (1,297,000)	$ (1,216,000)	$ (2,021,000)	$ 100,000