Partners' Capital (Tables)

6 Months Ended

Jun. 30, 2018

Partners' Capital Notes [Abstract]

Activity in the number of units

Activity in the number of units was as follows:

	Limited Partners		General Partner Valero
	Common Unitholders Public	Common Unitholder Valero		Total
Balance as of December 31, 2016	21,738,692	45,687,271	1,375,721	68,801,684
Unit-based compensation	5,997	—	—	5,997
Units issued under ATM Program	742,897	—	—	742,897
General partner units issued to maintain 2% interest	—	—	15,602	15,602
Balance as of June 30, 2017	22,487,586	45,687,271	1,391,323	69,566,180
Balance as of December 31, 2017	22,487,586	46,768,586	1,413,391	70,669,563
Unit-based compensation	5,898	—	—	5,898
General partner units issued to maintain 2% interest	—	—	120	120
Balance as of June 30, 2018	22,493,484	46,768,586	1,413,511	70,675,581

Schedule of common units issued under ATM Program

The table below summarizes activities of the common units issued under our ATM Program and general partner units issued to maintain the 2.0 percent general partner interest in the Partnership for the six months endedJune 30, 2017 (inthousands, except unit amounts):

	Units Issued	Total Proceeds		Offering Costs		Net Proceeds
Common – public	742,897	$	35,728	$	517	$	35,211
General partner	15,602	748		—		748