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Restatement of Previously Issued Financial Statements - Impact on Consolidated Balance Sheets (Parenthetical) (Detail) - $ / shares
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
 [1]
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Accounting Changes and Error Corrections [Abstract]                
Common stock, par value $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized 20,500,000       20,500,000      
Common stock, shares issued 7,203,000       7,126,000      
Common stock, shares outstanding 7,203,000       7,126,000      
[1] See Note 2. Restatement of Previously Issued Consolidated Financial Statements