Significant Accounting Policies Allowance for Doubtful Accounts (Policies)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Allowance for Doubtful Accounts

Allowance for Doubtful Accounts

The allowance for doubtful accounts is estimated based on the aging of accounts receivable, reviews of client credit reports, industry trends and economic indicators, as well as reviews of recent payment history for specific customers. The estimate is based largely on a formula-driven calculation but is supplemented with economic indicators and knowledge of potential write-offs of specific client accounts.