Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Restricted Performance Stock Unit and Equity Incentive Activity

	Equity Incentive Awards
	Restricted Stock Units			Weighted Average Grant Date Fair Value		Performance Shares			Weighted Average Grant Date Fair Value		Options		Weighted Average Exercise Price
Balance at December 31, 2018		183,726		$	17.26		296,523		$	19.1		59,000	$	18.33
Granted		294,629			5.41		489,261			6.28		—		—
Settled		(42,699	)		18.42		(31,081	)		22.81		—		—
Forfeited or expired		(18,975	)		15.79		(53,396	)		18.02		—		—
Balance at March 31, 2019		416,681		$	8.83		701,307		$	10.05		59,000	$	18.33
Vested or expected to vest at March 31, 2019		354,475		$	9.13		422,761		$	8.69		59,000	$	18.33