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Net Income Per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Net Income Per Common Share [Table Text Block]

The following table sets forth the computation of basic and diluted net income per common share:

	Year Ended December 31
	2017				2016				2015
	(thousands, except per-share data)
Net income	$	82,957			$	38,254			$	52,182
Weighted average common shares outstanding during the period (for basic calculation)	38,623				38,761				39,239
Dilutive effect of other potential common shares	451				164				116
Weighted average common shares and potential common shares (for diluted calculation)	39,074				38,925				39,355
Net income per common share - Basic	$	2.15			$	0.99			$	1.33
Net income per common share - Diluted	$	2.12			$	0.98			$	1.33

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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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