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Subsequent Events - Additional Information (Detail) - Subsequent Event [Member]
Feb. 26, 2016
USD ($)
Revolving Credit Facility Before Amendment [Member]  
Subsequent Event [Line Items]  
Line of credit facility maximum borrowing capacity $ 50,000,000
Percentage of fee on unused portion of the facility 0.375%
Swingline availability $ 5,000,000
Revolving Credit Facility [Member]  
Subsequent Event [Line Items]  
Line of credit facility maximum borrowing capacity $ 75,000,000
Percentage of fee on unused portion of the facility 0.25%
Swingline availability $ 10,000,000
Incremental accordion feature $ 25,000,000
Minimum [Member] | Revolving Credit Facility [Member]  
Subsequent Event [Line Items]  
Interest at an annual rate equal to LIBOR plus a margin range 1.25%
Maximum [Member] | Revolving Credit Facility [Member]  
Subsequent Event [Line Items]  
Interest at an annual rate equal to LIBOR plus a margin range 1.75%