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Property And Equipment (Property And Equipment Under Capital Lease Obligation) (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2011
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Dec. 31, 2010
|
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 56,385 | $ 50,359 |
| Less: accumulated depreciation and amortization | (28,113) | (21,722) |
| Property and equipment, net | 28,272 | 28,637 |
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Computer Equipment [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 31,058 | 26,034 |
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Computer Software [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 9,547 | 9,564 |
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Office Equipment And Furniture [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 3,710 | 3,611 |
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Automobiles [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 1,451 | 1,210 |
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Leasehold Improvements [Member]
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| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 10,619 | $ 9,940 |