XML 83 R66.htm IDEA: XBRL DOCUMENT v3.10.0.1
Anti-dilutive Security not Included In Diluted per Share Calculations (Parenthetical) (Detail) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Preferred stock, shares outstanding 0 3,680
Conversion of preferred stock to common stock 1,372,171 3,346,332
Series A Preferred Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Preferred stock, shares outstanding 0 3,680
Conversion of preferred stock to common stock   700,000