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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
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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)

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