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Concentration of Risk	12 Months Ended
Concentration of Risk	Dec. 31, 2016
Risks and Uncertainties [Abstract]
Concentration of Risk	Concentration of Risk The Company generates a significant amount of revenues from large clients, however, no individual client accounted for 10% or more of total revenues in the years ended December 31, 2016, 2015 and 2014. Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents and trade receivables. The Company places its cash equivalents with high credit-quality financial institutions and, by policy, limits the amount of credit exposure with any one financial institution. Concentrations of credit risk with respect to trade receivables are limited because a large number of geographically diverse clients make up the Company’s client base, thus spreading the trade receivables credit risk. The Company controls credit risk through monitoring procedures.