Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2017

Service Period Stock Options

Summary of Activity Related to Outstanding Stock Options

The following table includes activity related to outstanding service period stock options during the six months ended June 30, 2017.

Service Period Stock Options	Shares			Weighted Average Exercise Price
Outstanding at December 31, 2016		2,788,285		$	8.61
Granted		340,618			11.00
Exercised		(492,493	)		7.20
Forfeited		(3,572	)		13.94
Outstanding at June 30, 2017		2,632,838		$	14.70

Performance-Vested Stock Options

Summary of Activity Related to Outstanding Stock Options

Performance-Vested Stock Options

The following table includes activity related to outstanding performance-vested stock options during the six months ended June 30, 2017.

Performance Based Options	Shares			Weighted Average Exercise Price
Outstanding at December 31, 2016		1,357,561		$	10.24
Granted		110,741			11.00
Expired		(26,156	)		8.87
Forfeited		(2,936	)		15.00
Outstanding at June 30, 2017		1,439,210		$	10.31

(1) As of June 30, 2017, 516,877 performance-vested stock options at a weighted average exercise price of $9.79 have performance metrics that are probable of achievement. These shares are included in share-based compensation costs for the three and six months ended June 30, 2017.

Restricted Stock Units

Summary of Activity Related to Outstanding Stock Options

The following table includes activity related to outstanding restricted stock units during the six months ended June 30, 2017.

Restricted Stock Units	Shares			Weighted-Average Grant-Date Fair Value Per Unit
Outstanding at December 31, 2016		97,515		$	9.05
Granted		115,320			11.00
Issued Upon Vesting		(59,088	)		9.05
Outstanding at June 30, 2017		153,747		$	10.51