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Balance Sheet Information - Summary of Long-term Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Liabilities Noncurrent [Abstract]    
Reserve for uncertain tax positions $ 865 $ 865
Executive deferred compensation 0 1,908
Deferred rent 282 278
Deferred revenues 79 86
Long Term Liabilities $ 1,226 $ 3,137