| Summary of Preliminary Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 13, 2012
 M.D.G Logia Holdings Ltd | Apr. 12, 2013
 Mirror Image International Holdings Pvt Ltd | Sep. 13, 2012
 Customer relationships
 M.D.G Logia Holdings Ltd | Apr. 12, 2013
 Customer relationships
 Mirror Image International Holdings Pvt Ltd | Sep. 13, 2012
 Developed technology
 M.D.G Logia Holdings Ltd | Apr. 12, 2013
 Developed technology
 Mirror Image International Holdings Pvt Ltd | Sep. 13, 2012
 Trade names / Trademarks
 M.D.G Logia Holdings Ltd | Apr. 12, 2013
 Trade names / Trademarks
 Mirror Image International Holdings Pvt Ltd | Sep. 13, 2012
 Non-compete agreements
 M.D.G Logia Holdings Ltd | Apr. 12, 2013
 Library
 Mirror Image International Holdings Pvt Ltd | 
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| Business Acquisition [Line Items] | ||||||||||
| Cash | $ 59 | $ 514 | ||||||||
| Accounts receivable | 567 | 2,809 | ||||||||
| Prepaid expenses and other assets | 86 | 1,070 | ||||||||
| Property, Plant and Equipment | 300 | |||||||||
| Amortizable intangible assets | 3,454 | 652 | 818 | 5,820 | 143 | 54 | 54 | 300 | ||
| Goodwill | 1,067 | 1,252 | ||||||||
| Accounts payable | (1,395) | |||||||||
| Current liabilities | (1,222) | |||||||||
| Accrued liabilities | (2,891) | |||||||||
| Long-term debt | (35) | |||||||||
| Accrued compensation | (345) | |||||||||
| Purchase price | $ 4,991 | $ 8,140 | 
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- Definition Business Acquisition Purchase Price Allocation Accrued Compensation And Benefits No definition available. 
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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of cash and cash equivalents acquired in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to receivables. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to current liabilities of the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to accounts payable of the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to accrued expenses of the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to the current portion of long-term debt of the acquired entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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