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Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Option Activity

A summary of option activity under our 1998 Stock Option Plan as of December 31, 2017, and changes during the nine months ended September 30, 2018 is presented below.

			Number  of Stock Options						Weighted Average Exercise  Price						Weighted Average Remaining Contractual Life (years)						Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2017			327,270						$	20.21					4.28						$	2,255
Exercised			(38,250)						17.79						—						216
Canceled/Forfeited			(5,334)						24.02						—						3
Outstanding, September 30, 2018			283,686						$	20.46					3.83						$	970
Exercisable, September 30, 2018			262,821						$	19.85					3.47						$	970

Summary of Stock Options Outstanding

The following table summarizes information about our stock options outstanding at September 30, 2018:

Range of Exercise Prices			Options Outstanding																														Options Exercisable
						Shares						Weighted Average Remaining Contractual Life (years)						Weighted Average Exercise Price						Shares						Weighted Average Exercise Price
$0.01-15.70			64,852						0.77						$	9.75					64,852						$	9.75
$15.71-17.81			42,000						1.82						17.54						42,000						17.54
$17.82-20.48			50,500						2.59						19.43						50,500						19.43
$20.49-33.36			126,334						6.57						27.35						105,469						27.19
			283,686						3.83						$	20.46					262,821						$	19.85

Status of Unvested Stock Options

The summary of the status of our unvested stock options as of December 31, 2017 and changes during the nine months ended September 30, 2018 is presented below.

Unvested stock options:			Shares						Weighted Average Grant Date Fair Value Per Share
Unvested at December 31, 2017			48,581						$	11.41
Vested			(26,549)						10.97
Canceled/Forfeited			(1,167)						11.93
Unvested at September 30, 2018			20,865						$	11.93

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the change in stock options.

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