Schedule of Components of Purchase Price and Net Assets Acquired (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Net Assets Acquired:  
Rental fleet $ 991
Intangible assets:  
Goodwill 128
Total purchase price 1,200
Customer relationships  
Intangible assets:  
Intangible assets 57
Non-compete agreements  
Intangible assets:  
Intangible assets $ 24