Fair Value Measurements - Additional Information (Detail) (USD $)		6 Months Ended	12 Months Ended					6 Months Ended
	Jun. 30, 2014 Level 1 [Member]	Jun. 30, 2014 Level 2 [Member] Productive Resources, LLC (PRI) [Member]	Dec. 31, 2012 Level 2 [Member] Productive Resources, LLC (PRI) [Member] Installment	Jun. 30, 2014 Level 3 [Member]	Dec. 31, 2013 Level 3 [Member]	Jun. 30, 2014 Level 3 [Member] VSI and E5 [Member]	Dec. 31, 2013 Level 3 [Member] VSI and E5 [Member]	Jun. 30, 2014 Level 3 [Member] VSI [Member]	Jun. 30, 2014 Level 3 [Member] E5 Global Holdings, Inc. [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets fair value disclosure	$ 0
Financial liabilities fair value disclosure	0
Contingent consideration				2,023,000	3,080,000	2,000,000	3,100,000
Acquisition costs			2,000,000
Number of installments			3
Maturity date		2015-06
Contingent consideration increase (decrease)								$ 99,000	$ (133,000)