Business Combinations, Goodwill and Intangible Assets (Details 2) (USD $)	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended				9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2011 Brazil [Member]	Dec. 31, 2010 Brazil [Member]	Sep. 30, 2011 Argentina [Member]	Dec. 31, 2010 Argentina [Member]	Sep. 30, 2011 Chile [Member]	Dec. 31, 2010 Chile [Member]	Sep. 30, 2011 Mexico [Member]	Dec. 31, 2010 Mexico [Member]	Sep. 30, 2011 Venezuela [Member]	Dec. 31, 2010 Venezuela [Member]	Dec. 31, 2009 Venezuela [Member]	Sep. 30, 2011 Colombia [Member]	Dec. 31, 2010 Colombia [Member]	Sep. 30, 2011 Other Countries [Member]	Dec. 31, 2010 Other Countries [Member]
Goodwill [Line Items]
Balance, beginning of year	$ 60,496,314	$ 59,822,746	$ 13,130,649	$ 12,565,062	$ 23,364,326	$ 24,446,463	$ 7,296,888	$ 6,734,405	$ 5,025,623	$ 4,770,560	$ 4,846,030	$ 4,846,030	$ 4,846,030	$ 5,448,068	$ 5,100,939	$ 1,384,730	$ 1,359,287
Purchase of Autoplaza.com	6,663,045								6,663,045
Effect of exchange rates changes	(4,297,599)	673,568	(1,332,609)	565,587	(1,272,397)	(1,082,137)	(751,701)	562,483	(951,712)	255,063				(3,186)	347,129	14,006	25,443
Balance, end of the period	$ 62,861,760	$ 60,496,314	$ 11,798,040	$ 13,130,649	$ 22,091,929	$ 23,364,326	$ 6,545,187	$ 7,296,888	$ 10,736,956	$ 5,025,623	$ 4,846,030	$ 4,846,030	$ 4,846,030	$ 5,444,882	$ 5,448,068	$ 1,398,736	$ 1,384,730

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

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