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Significant Customers & Concentration of Credit Risk	3 Months Ended
Significant Customers & Concentration of Credit Risk	Mar. 31, 2019
Risks and Uncertainties [Abstract]
Significant Customers & Concentration of Credit Risk	Significant Customers & Concentration of Credit Risk We have a market concentration of revenue in both the automotive sector and financial & insurance sector. Revenue from the automotive sector accounted for approximately 27% and 22% of our consolidated revenue for the three months ended March 31, 2019 and 2018, respectively. In addition, we have a concentration of revenue from a single automotive customer, which accounted for approximately 13% and 15% of our consolidated revenue for the three months ended March 31, 2019 and 2018, respectively. Revenue from the financial & insurance sector accounted for approximately 15% and 20% of our consolidated revenue for the three months ended March 31, 2019 and 2018, respectively. In addition, we have a concentration of revenue from a single financial services customer, which accounted for approximately 11% and 14% of our consolidated revenue for the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019, billed and unbilled accounts receivable from a single financial services customer totaled $29.4 million, or 16%, of our consolidated accounts receivable and unbilled revenue balances. No other single customer accounted for more than 10% of our consolidated revenue for the three months ended March 31, 2019 or 2018 or consolidated accounts receivable balance as of March 31, 2019.