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Allowance for Doubtful Accounts and Unbilled Services	6 Months Ended
Allowance for Doubtful Accounts and Unbilled Services	Jun. 30, 2017
Allowance For Doubtful Accounts And Unbilled Services [Abstract]
Allowance for Doubtful Accounts and Unbilled Services	5. Allowance for Doubtful Accounts and Unbilled Services We record adjustments to the allowance for doubtful accounts and unbilled services as a reduction in revenues when there are changes in estimates of fee reductions that may be imposed by bankruptcy courts and other regulatory institutions for both billed and unbilled receivables. The allowance for doubtful accounts and unbilled services is also adjusted after the related work has been billed to the client and we discover that collectability is not reasonably assured. These adjustments are recorded to “Selling, general and administrative expenses” on the Condensed Consolidated Statements of Comprehensive Income and totaled $2.4 million and $6.0 million for the three and six months ended June 30, 2017, respectively, and $3.9 million and $4.3 million for the three and six months ended June 30, 2016, respectively.