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Classification of Compensation Expense Associated with Share-Based Payments (Detail) (USD $)
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3 Months Ended | |
|---|---|---|
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Mar. 31, 2014
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Mar. 31, 2013
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Allocated Share-based Compensation Expense | $ 310,000 | $ 368,000 |
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Cost of Revenue
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Allocated Share-based Compensation Expense | 46,000 | 80,000 |
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Sales and Marketing
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Allocated Share-based Compensation Expense | 125,000 | 139,000 |
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General and Administrative Expense
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Allocated Share-based Compensation Expense | 115,000 | 115,000 |
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Engineering And Development
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||
| Allocated Share-based Compensation Expense | $ 24,000 | $ 34,000 |