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Acquisitions - Summary of Estimated Fair Values Allocated to Major Classes of Assets Acquired and Liabilities Assumed (Detail) - Ascolta [Member]
$ in Thousands
Mar. 31, 2014
USD ($)
Assets Acquired [Member]  
Business Acquisition [Line Items]  
Accounts receivable and other current assets $ 849
Furniture and equipment 370
Identifiable intangible assets 1,670
Goodwill 3,332
Liabilities Assumed [Member]  
Business Acquisition [Line Items]  
Other liabilities $ 1,035