Stock Buy Back Plans

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Stock Buy Back Plans

NOTE 15. Stock Buy Back Plans

On February 2, 2016, our Board of Directors authorized the purchase of up to $100 million of our Class A Common Stock. This authorization expired on December 31, 2016. We purchased 2,672,227 shares under this authorization during the year ended December 31, 2016, completing the authorization.  There was no purchase authorized in 2017.