Rights Agreement	12 Months Ended
Dec. 31, 2015
Rights Agreement
Rights Agreement	17. Rights Agreement Legacy Dawson executed a Rights Agreement, dated as of July 23, 2009, between Legacy Dawson and Mellon Investors Services, LLC, as rights agent (the "Rights Agreement"). The Rights Agreement set forth and governed the rights that were dividended to the holders of record of the common stock of Legacy Dawson at the close of business on July 23, 2009 (the "Rights"). The Rights, if triggered, would have entitled the registered holder to purchase from Legacy Dawson certain fractional shares of Series A Junior Participating Preferred Stock, par value $1.00 per share, of Legacy Dawson. On October 8, 2014, Legacy Dawson entered into an amendment to the rights agreement (the "Rights Amendment") with the rights agent in order to include provisions such that (a) the Merger would not trigger any action under the Rights Agreement and no distribution of rights would occur by virtue of the Merger or the consummation of the other transactions contemplated thereby and (b) the rights would expire at the effective time of the Merger. Pursuant to the Rights Amendment, the Rights Agreement expired pursuant to its terms upon the closing of the Merger on February 11, 2015.

17. Rights Agreement

Legacy Dawson executed a Rights Agreement, dated as of July 23, 2009, between Legacy Dawson and Mellon Investors Services, LLC, as rights agent (the "Rights Agreement"). The Rights Agreement set forth and governed the rights that were dividended to the holders of record of the common stock of Legacy Dawson at the close of business on July 23, 2009 (the "Rights"). The Rights, if triggered, would have entitled the registered holder to purchase from Legacy Dawson certain fractional shares of Series A Junior Participating Preferred Stock, par value $1.00 per share, of Legacy Dawson.

On October 8, 2014, Legacy Dawson entered into an amendment to the rights agreement (the "Rights Amendment") with the rights agent in order to include provisions such that (a) the Merger would not trigger any action under the Rights Agreement and no distribution of rights would occur by virtue of the Merger or the consummation of the other transactions contemplated thereby and (b) the rights would expire at the effective time of the Merger. Pursuant to the Rights Amendment, the Rights Agreement expired pursuant to its terms upon the closing of the Merger on February 11, 2015.