Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

Stock-Based Compensation

Summary of the Company's stock option and restricted stock activity (in thousands)

		Weighted-					Weighted-
		Average		Aggregate			Average
	Stock	Exercise		Intrinsic		Restricted	Grant-Date
	Options	Price		Value		Stock	Fair Value
Outstanding (stock options); non-vested (restricted stock) at December 31, 2015	56,600	$	53.03	$	357	17,411	$	57.75
Granted	9,900		70.37		—	16,813		68.12
Exercised (stock options); vested (restricted stock)	(7,000)		32.28		150	(16,422)		55.28
Forfeited	—		—		—	(105)		65.42
Outstanding (stock options); non-vested (restricted stock) at December 31, 2016	59,500	$	58.36	$	1,035	17,697	$	64.01
Exercisable at December 31, 2016	59,500	$	58.36	$	1,035	n/a		n/a

	2016		2015		2014
Weighted-average fair value of stock options granted during the year	$	13.12	$	10.79	$	14.62
Weighted-average remaining contractual life for stock options in years		6.78		6.32		6.46
Total fair value of stock options vested during the year	$	130	$	107	$	145
Total intrinsic value of stock options exercised during the year	$	150	$	30	$	657
Total fair value of restricted stock vested during the year	$	907	$	1,099	$	955