Property and Equipment, Net (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	$ 11,771	$ 12,111
Less accumulated depreciation and amortization	(10,645)	(10,863)
Property Plant and Equipment Net	1,126	1,248
Warehouse Equipment
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	4,941	5,197
Office Equipment
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	5,190	5,246
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	1,525	1,554
Automobiles
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Gross	$ 115	$ 114