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Summary of Significant Accounting Policies , Warranties (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Movement in Standard Product Warranty Accrual [Roll Forward] | |||
| Accrued warranty balance—beginning of the period | $ 2,309 | $ 2,582 | $ 1,878 |
| Warranty costs incurred | (3,444) | (2,669) | (1,778) |
| Provision for warranty for the year, including warranty liabilities assumed in connection with an acquisition | 3,965 | 2,639 | 2,103 |
| Changes in prior period estimates | 207 | (243) | 379 |
| Accrued warranty balance—end of the period | $ 3,037 | $ 2,309 | $ 2,582 |
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Hardware Products [Member]
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| Warranties [Line Items] | |||
| Warranty length | 1 year | ||
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Software Products [Member]
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| Warranties [Line Items] | |||
| Warranty length | 90 days | ||