Accounts Receivable, Net Of Reserve For Doubtful Receivables | 9 Months Ended |
|---|---|
Sep. 30, 2011 | |
| Accounts Receivable, Net Of Reserve For Doubtful Receivables [Abstract] | |
| Accounts Receivable, Net Of Provision For Doubtful Receivables | 6. Accounts receivable, net of reserve for doubtful receivables Accounts receivable were $308,851 and $404,457, and reserve for doubtful receivables were $2,926 and $8,795, resulting in net accounts receivable balances of $305,925 and $395,662, as of December 31, 2010 and September 30, 2011, respectively. In addition, accounts receivable due after one year of $10,454 and $13,034 as of December 31, 2010 and September 30, 2011, respectively are included under other assets in the Consolidated Balance Sheets. Accounts receivable from related parties were $131,959 and $140,950, and reserve for doubtful receivables were $688 and $1,003, resulting in net accounts receivable balances of $131,271 and $139,947, as of December 31, 2010 and September 30, 2011 respectively. |