Acquisitions (Detail) (USD $)	0 Months Ended			6 Months Ended			1 Months Ended	6 Months Ended
	Dec. 16, 2013 Black Hawk Energy Services, Inc.	Jun. 30, 2014 Black Hawk Energy Services, Inc.	Dec. 16, 2013 Customer relationships Black Hawk Energy Services, Inc.	Jun. 30, 2014 Trade names Black Hawk Energy Services, Inc.	Dec. 16, 2013 Trade names Black Hawk Energy Services, Inc.	Dec. 16, 2013 Non-compete agreement Black Hawk Energy Services, Inc.	Feb. 28, 2014 UK Elite Soccer, Inc. Provider of Soccer Clinics	Jun. 30, 2014 UK Elite Soccer, Inc. Provider of Soccer Clinics business
Intangible assets		$ 12,210,000	$ 11,300,000		$ 800,000	$ 100,000	$ 900,000
Amortization period (in years)				5 years
Number of businesses acquired								3
Total purchase price							1,000,000
Consideration transferred, net	60,800,000						500,000
Current assets								200,000
Current liabilities								$ 600,000