XML 42 R26.htm IDEA: XBRL DOCUMENT v3.8.0.1

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

Equity [Abstract]

Schedule of Restricted Stock Unit Activity

RSU activity for the year ended December 31, 2017 is presented below (in thousands, except per share data):

						Weighted-
						Average
		Number of				Grant Date
		Shares				Fair Value
Unvested at December 31, 2016			539			$	35.50
Granted			253				39.73
Vested			(212	)			35.38
Forfeited			(71	)			35.92
Unvested at December 31, 2017			509			$	37.59

Schedule of Stock Option Activity

Stock option activity for the year ended December 31, 2017 is presented below (in thousands, except per share data and contractual term):

						Weighted -				Weighted -
						Average				Average
						Exercise				Remaining				Aggregate
		Number				Price Per				Contractual				Intrinsic
		of Shares				Share				Term (in years)				Value
Outstanding at December 31, 2016			1,540			$	34.35
Granted			—				—
Exercised			(512	)			32.90
Forfeited			(91	)			34.87
Outstanding at December 31, 2017			937			$	35.10				5.86			$	8,529
Exercisable at December 31, 2017			650			$	34.98				5.16			$	5,992
Vested and expected to vest at December 31, 2017			937			$	35.10				5.86			$	8,529

Summary of Shares Purchased by Employees Under the Stock Purchase Plan

Shares purchased by employees under the Stock Purchase Plan are as follows (in thousands, except per share data):

	Shares				Purchase
Purchase Period Ended	Purchased				Price
February 28, 2017		24			$	31.03
August 31, 2017		26			$	31.71
February 29, 2016		28			$	26.00
August 31, 2016		25			$	27.04

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of employee stock purchase plan activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

Name:	us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration