Stock Repurchase Program, Authorized Amount, Additional

No definition available.

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- Definition

The cash outflow to reacquire common and preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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Share Repurchase Program Share Repurchase Program (Narrative) (Details) - USD ($)		12 Months Ended
	Aug. 18, 2017	Dec. 31, 2017	Dec. 31, 2015	Oct. 25, 2017	Feb. 25, 2016
Related Party Transaction [Line Items]
Authorized amount				$ 40,000,000.0	$ 25,000,000.0
Authorized amount, additional				$ 15,000,000.0
Treasury stock acquired, shares		574,054	1,927,665
Payments for repurchase of equity		$ 14,000,000	$ 45,000,000
Average cost per share (in usd per share)		$ 24.35	$ 23.34
Board of Directors Chairman [Member] \| Share Repurchase [Member]
Related Party Transaction [Line Items]
Treasury stock acquired, shares	100,000
Payments for repurchase of equity	$ 2,400,000
Average cost per share (in usd per share)	$ 23.85