Acquisitions (Detail) (USD $)	0 Months Ended			9 Months Ended			9 Months Ended
	Dec. 16, 2013 Black Hawk Energy Services, Inc.	Sep. 30, 2014 Black Hawk Energy Services, Inc.	Dec. 16, 2013 Customer relationships Black Hawk Energy Services, Inc.	Sep. 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.	Sep. 30, 2014 UK Elite Soccer, Inc. Provider of Soccer Clinics business	Sep. 30, 2014 Measurement Period Adjustments Black Hawk Energy Services, Inc.
Consideration transferred, net	$ 60,800,000						$ 500,000
Net assets acquired		(59,563,000)						1,200,000
Intangible assets		12,210,000	11,300,000		800,000	100,000	900,000	12,210,000
Amortization period (in years)				5 years
Number of businesses acquired							3
Total purchase price							1,000,000
Current assets							200,000
Current liabilities							$ 600,000