Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment - Additional Information (Detail)

v2.4.1.9
Property and Equipment - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Property Plant And Equipment [Line Items]    
Depreciation $ 6us-gaap_Depreciation $ 5us-gaap_Depreciation