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Property and Equipment (Details) (USD $)
|
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
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Sep. 30, 2011
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Dec. 31, 2011
|
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | $ 42,012,000 | $ 42,012,000 | $ 34,345,000 | ||
| Less: accumulated depreciation and amortization | (25,116,000) | (25,116,000) | (20,484,000) | ||
| Property and equipment, net | 16,896,000 | 16,896,000 | 13,861,000 | ||
| Capital lease | 8,053,000 | 8,053,000 | 8,053,000 | ||
| Capital lease, accumulated depreciation | 4,558,000 | 4,558,000 | 3,313,000 | ||
| Depreciation and amortization expense | 1,739,000 | 1,121,000 | 5,066,000 | 3,466,000 | |
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Computer equipment
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|||||
| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | 17,144,000 | 17,144,000 | 12,483,000 | ||
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Computer software
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | 5,913,000 | 5,913,000 | 5,720,000 | ||
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Furniture, fixtures and equipment
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | 1,438,000 | 1,438,000 | 1,330,000 | ||
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Scanner appliances
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | 15,894,000 | 15,894,000 | 13,394,000 | ||
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Scanner applicances and other computer equipment subject to subscription
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment, net | 4,905,000 | 4,905,000 | 3,436,000 | ||
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Scanner appliances and other computer equipment not placed in service
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|||||
| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | 1,170,000 | 1,170,000 | 210,000 | ||
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Leasehold improvements
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | 1,623,000 | 1,623,000 | 1,418,000 | ||
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Other fixed assets not placed in service
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| Property, Plant and Equipment [Line Items] | |||||
| Property and equipment | $ 1,315,000 | $ 1,315,000 | $ 500,000 | ||