Stock-Based Compensation

6 Months Ended

Jun. 30, 2017

12. Stock-Based Compensation

During the three months ended June 30, 2017, we granted 11.6 thousand shares of restricted stock units with a weighted average grant date fair value of $25.95 per share, which vest over a three year period from the grant date. During the six months ended June 30, 2017, we granted 0.2 million shares of restricted stock units with a weighted average grant date fair value of $23.12 per share, which vest over a one or three year period from the grant date.

A summary of our outstanding awards of restricted common stock and restricted stock units are as follows (in thousands, except years):


		As of June 30, 2017
	Restricted Stock Awards		Restricted Stock Units		Total
Unvested awards/units		149		538		687
Unrecognized compensation cost	$	1,495	$	7,149	$	8,644
Period to recognize compensation cost		0.6 years		1.8 years		1.6 years (average)

During the three months ended June 30, 2017 and 2016, we recognized stock-based compensation of $2.0 million and $1.7 million, respectively. During the six months ended June 30, 2017 and 2016, we recognized stock-based compensation of $3.9 million and $3.5 million, respectively. Stock-based compensation expense is included in selling, general, and administrative on our consolidated statements of operations.