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Stock-Based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2018

Stock Options Plan [Member]

Summary of Transactions of Company's Stock Option Plans

The following table summarizes the transactions of the Company’s stock option plans for the six months ended June 30, 2018:

		Number of Options				Weighted Average Exercise Price				Weighted Average Grant-Date Fair Value
Outstanding at December 31, 2017			357,666			$	13.74			$	35.69
Granted - at discount			71,227			$	0.00			$	57.53
- at market value			18,850			$	68.20			$	16.23
Exercised			(83,512	)		$	13.24			$	25.93
Forfeited			(14,043	)		$	21.65			$	24.84
Outstanding at June 30, 2018			350,188			$	13.68			$	41.84

Stock Equivalent Units [Member]

Summarizes Transactions of SEUs

The following table summarizes the transactions of the Company’s SEUs for the six months ended June 30, 2018:

		Number of SEUs				Weighted Average Exercise Price				Weighted Average Grant-Date Fair Value
Outstanding at December 31, 2017			400,342			$	3.10			$	46.65
Granted - at discount			103,278			$	0.00			$	57.56
- at market value			5,658			$	68.20			$	16.23
Exercised			(72,689	)		$	5.81			$	29.27
Forfeited			(16,554	)		$	1.40			$	37.14
Outstanding at June 30, 2018			420,035			$	2.81			$	52.31

X

- Definition

Tabular disclosure for share-based compensation 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.

+ References

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-Publisher FASB
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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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