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Supplemental Cash Flow Disclosure - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended
Sep. 30, 2012
Jun. 30, 2011
Dec. 31, 2011
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Jan. 13, 2011
Dec. 31, 2012
Star Asia Opportunity II [Member]
Oct. 31, 2011
7.625% Contingent Convertible Senior Notes due 2027 [Member]
Dec. 31, 2011
7.625% Contingent Convertible Senior Notes due 2027 [Member]
Oct. 31, 2011
10.50% Contingent Convertible Senior Notes due 2027 [Member]
Dec. 31, 2011
10.50% Contingent Convertible Senior Notes due 2027 [Member]
Dec. 31, 2012
Additional Paid-In Capital [Member]
Dec. 31, 2011
Additional Paid-In Capital [Member]
Dec. 31, 2012
Accumulated Other Comprehensive Income / (Loss) [Member]
Dec. 31, 2011
Accumulated Other Comprehensive Income / (Loss) [Member]
Dec. 31, 2012
Non-controlling Interest [Member]
Dec. 31, 2011
Non-controlling Interest [Member]
Dec. 31, 2012
Common Stock [Member]
Dec. 31, 2011
Common Stock [Member]
Dec. 31, 2012
Treasury Stock [Member]
Dec. 31, 2011
Treasury Stock [Member]
Supplemental Cash Flow Information [Line Items]                                              
Interest paid         $ 4,698 $ 5,690 $ 6,525                                
Paid income taxes         158 66 639                                
Received income tax refunds         134 397 898                                
Acquisition / (surrender) of additional units of consolidated subsidiary, net         928 (8)               928 (8) (23) (4) (905) 12        
Reclassification of redeemable non-controlling interest to mandatorily redeemable equity interests   3,536     6,446                                    
Common Stock shares retired 50,400   667,601 50,400                                (50,400) (667,601) 50,400 667,601
Increase in accumulated deficit (328)                                            
Decrease in treasury stock (328)                                            
Reclassification of mandatorily redeemable equity interests to debt         4,824                                    
Reclassification of equity method investments                 1,841                            
Shares of Star Asia           54,452                                  
Dollar value of shares of Star Asia transferred           476                                  
Number of warrants transferred           371,950                                  
Number of common stock transferred           3,750                                  
Value of common stock transferred           146                                  
Net assets     16,813     16,813                                  
Cash consideration     14,956     14,956   15,044                              
Shares consideration                                         313,051    
Value of stock consideration     1,531     1,531                                  
Contingent payments     326     326                                  
Acquisition contribution     45,000     45,000                                  
Percentage of ownership interest not owned by parent     30.00%     30.00%                                  
Percentage of membership interests     70.00%     70.00%                                  
Acquisition of PrinceRidge     18,502     18,502                                  
Aggregate principal amount of notes exchanged         8,121         500 7,621 500 7,621                    
Senior notes, interest rate                   7.625%   10.50%                      
Senior notes, maturity year                   2027   2027                      
Retained earning accumulated deficit                             $ 1,487           $ 1 $ (328) $ (1,488)