Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Parenthetical) (Detail)

v3.3.1.900
Quarterly Financial Data (Parenthetical) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Quarterly Financial Data [Line Items]    
Gain from sale of discontinued operations $ 500 $ (2,396)