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Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Net Income Per Share

The following is a reconciliation of basic to diluted net income per share:

		Years Ended December 31,
		2017				2016				2015
Numerator:
Net income		$	339,132			$	104,809			$	122,297
Denominator:
Shares used in net income per common share — basic			54,137,000				53,472,000				53,282,000
Effect of dilutive securities			937,000				579,000				278,000
Shares used in net income per common share — diluted			55,074,000				54,051,000				53,560,000
Net income per common share:
Basic		$	6.26			$	1.96			$	2.30
Diluted		$	6.16			$	1.94			$	2.28

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- References

No definition available.

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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