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Weighted-Average Amortization Period for Intangible Assets Acquired (Whittier) (Detail) (USD $)
0 Months Ended
Sep. 01, 2013
Whittier [Member]
Sep. 01, 2013
Whittier [Member]
Exclusive Agreement [Member]
Sep. 01, 2013
Whittier [Member]
Noncompete Agreement
Jan. 06, 2014
Fletcher [Member]
Jan. 06, 2014
Fletcher [Member]
Noncompete Agreement
Dec. 07, 2013
Eagle Rock [Member]
Dec. 07, 2013
Eagle Rock [Member]
Noncompete Agreement
Assets Acquired $ 60,000 $ 40,000 $ 20,000 $ 6,000 $ 6,000 $ 2,400 $ 2,400
Weighted-average Amortization Period (years)   4 years 5 years   3 years   3 years