Stock Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Options Activity

A summary of the status of the Company’s stock options at December 31, 2017, together with changes during the periods then ended, is presented below:

						Weighted
				Weighted		average		Aggregate
				average		remaining		intrinsic
	Number			exercise		contractual		value
	of options			price		term (years)		(in thousands)
Outstanding at December 31, 2016		303,200		$	17.89		—		—
Options exercised		(10,800	)		15.08		—		—
Outstanding at December 31, 2017		292,400			17.99		3.57		13,596
Exercisable at December 31, 2017		228,650			16.46		3.15	$	10,982

Schedule of Restricted Stock Unit Activity

The following table presents restricted stock unit activity:

				Weighted Average
				Grant Date
	Units			Fair Value
Nonvested at December 31, 2016		228,875		$	42.48
Granted		81,792			57.29
Vested		(46,894	)		43.66
Cancelled/Forfeited		(29,390	)		43.71
Nonvested at December 31, 2017		234,383		$	47.26