XML 126 R101.htm IDEA: XBRL DOCUMENT v2.4.1.9

Subsequent Events - Additional Information (Detail) (USD $)	3 Months Ended												12 Months Ended			0 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 13, 2015
Subsequent Event [Line Items]
Dividends per share declared on outstanding common stock	$ 0.25us-gaap_CommonStockDividendsPerShareDeclared	$ 0.10us-gaap_CommonStockDividendsPerShareDeclared	$ 0.10us-gaap_CommonStockDividendsPerShareDeclared	$ 0.10us-gaap_CommonStockDividendsPerShareDeclared	$ 0.23us-gaap_CommonStockDividendsPerShareDeclared	$ 0.10us-gaap_CommonStockDividendsPerShareDeclared	$ 0.08us-gaap_CommonStockDividendsPerShareDeclared	$ 0.08us-gaap_CommonStockDividendsPerShareDeclared	$ 0.20us-gaap_CommonStockDividendsPerShareDeclared	$ 0.08us-gaap_CommonStockDividendsPerShareDeclared	$ 0.08us-gaap_CommonStockDividendsPerShareDeclared	$ 0.10us-gaap_CommonStockDividendsPerShareDeclared	$ 0.55us-gaap_CommonStockDividendsPerShareDeclared	$ 0.49us-gaap_CommonStockDividendsPerShareDeclared	$ 0.46us-gaap_CommonStockDividendsPerShareDeclared
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends per share declared on outstanding common stock																$ 0.12us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Dividend payable date																Mar. 02, 2015
Dividends payable, shareholders record date																Feb. 18, 2015

X

- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: 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

+ Details

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

Name:	us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: