|
Summary of Significant Accounting Policies - Business Segment (Details) (USD $)
|
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
segment
region
|
Sep. 30, 2011
|
|
| Segment Reporting Information [Line Items] | ||||
| Number of reportable segments | 4 | |||
| Number of U.S. regions reported in aggregate | 4 | |||
| Income before taxes and unallocated corporate expenses | $ 6,370,389 | $ 194,499 | $ 15,261,663 | $ 7,564,040 |
|
All Other [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Number of U.S. regions reported in aggregate | 4 | |||
| Income before taxes and unallocated corporate expenses | 6,370,389 | 194,499 | 15,261,663 | 7,564,040 |
|
Unallocated Amount to Segment [Member]
|
||||
| Segment Reporting Information [Line Items] | ||||
| Indirect expenses | $ 11,244,873 | $ 10,259,457 | $ 33,899,622 | $ 28,636,642 |
| X | ||||||||||
|
- Definition
Income before Income Taxes and Unallocated Corporate Expenses No definition available.
|
| X | ||||||||||
|
- Definition
Indirect Expenses No definition available.
|
| X | ||||||||||
|
- Definition
Number of Regions Reported in Aggregate No definition available.
|
| X | ||||||||||
|
- Definition
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
|
| X | ||||||||||
|
- Details
|