Change in rate spread over LIBOR.

No definition available.

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- Definition

Month and year when the credit facility terminates.

+ References

No definition available.

+ Details

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Namespace Prefix:	chsp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of extension options available under the revolving credit facility.

+ References

No definition available.

+ Details

Name:	chsp_LineOfCreditFacilityMaturityExtensionOption
Namespace Prefix:	chsp_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Potential future maximum borrowing capacity under the revolving credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	chsp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of hotel rooms in a real estate portfolio or in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 35

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Subsequent Events (Details Textual 1) (USD $)	0 Months Ended
Subsequent Events (Details Textual 1) (USD $)	Oct. 25, 2012	Sep. 30, 2012 room	Oct. 14, 2011	Oct. 30, 2012 Acquisition Of The Hotel Minneapolis [Member] room	Oct. 25, 2012 Minimum [Member]	Oct. 14, 2011 Minimum [Member]	Oct. 25, 2012 Maximum [Member]	Oct. 14, 2011 Maximum [Member]
Subsequent Events [Line Items]
Maximum borrowing capacity under revolving credit facility	$ 250,000,000	$ 200,000,000	$ 200,000,000
Potential future maximum borrowing capacity under revolving credit facility	375,000,000
Change in rate spread over LIBOR	1.00%
Rate spread over LIBOR					1.75%	2.75%	2.75%	3.75%
Revolving credit facility maturity month year	April 2016
Revolving credit facility maturity extension option, in years	1 year
Number of hotel rooms		4,500		222
Net assets acquired		$ 1,075,244,000		$ 46,300,000