The provision for income taxes for the years ended December 31, 2016, 2015 and 2014 consisted of the following components: 

		2016				2015				2014
Current:
U.S. federal		$	—			$	—			$	—
State		21				27				40
Total current		21				27				40
Deferred:
U.S. federal		$	17			$	17			$	10
State		5				—				1
Total deferred		22				17				11
Provision for income taxes		$	43			$	44			$	51