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Income Taxes - Provision for Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Federal:        
Current $ 81 $ 41 $ 91 $ 67
Deferred (2)   (2)  
Gross Federal 79 41 89 67
State:        
Current 174 146 199 212
Deferred 1 1 2 2
Gross State 175 147 201 214
Income tax expense $ 254 $ 188 $ 290 $ 281