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Discontinued Operations - Disposal of Discontinued Activity (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 4 Months Ended 12 Months Ended 8 Months Ended 12 Months Ended 11 Months Ended 12 Months Ended 4 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
May 02, 2012
Zhejiang Continental [Member]
Dec. 31, 2011
Zhejiang Continental [Member]
Aug. 31, 2012
Qingdao Kaixiang [Member]
Dec. 31, 2011
Qingdao Kaixiang [Member]
Nov. 30, 2012
Wuxi Ruizhong [Member]
Dec. 31, 2011
Wuxi Ruizhong [Member]
Dec. 31, 2012
Search Media International [Member]
Dec. 31, 2011
Search Media International [Member]
May 14, 2012
Shenyang Jingli [Member]
Dec. 31, 2011
Shenyang Jingli [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                          
Advertising service revenues   $ 30,029 $ 55,571 $ 379 $ 2,611 $ 89 $ 2,603 $ 1,656 $ 2,035 $ 27,899 $ 47,851 $ 6 $ 471
Pretax profit/(loss)   (6,501) (9,629) (143) 303 (563) 338 146 493 (6,192) (10,214) 251 (549)
Net profit / (loss)    $ (6,723) $ (9,712) $ (143) $ 100 $ (563) $ 253 $ (19) $ 192 $ (6,220) $ (11,073) $ 222 $ (816)