Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

The following table summarizes the restricted stock award, deferred stock units, and performance unit award activity for the years ended December 31, 2018 and 2017:


	Restricted Stock	Deferred Stock Units	Performance Stock Units	Weighted Average Aggregate Grant Date Fair Value





Outstanding as of January 1, 2017	79,272	—	63,690	$	21.66
Granted	175,196	26,860	120,583	14.46
Vested	(22,808)	—	—	28.88
Adjustment for incentive awards expected to vest	—	—	46,130	19.00
Canceled and forfeited	(44,854)	—	(49,062)	15.40
Outstanding as of December 31, 2017	186,806	26,860	181,341	$	16.53
Granted	62,320	14,914	65,421	27.05
Vested	(36,876)	—	—	28.07
Adjustment for incentive awards expected to vest	—	—	65,491	26.93
Canceled and forfeited	(20,425)	—	(11,880)	16.38
Outstanding as of December 31, 2018	191,825	41,774	300,373	$	18.61