Commitment Level, Consecutive Period Commitment Must Remain

No definition available.

Name:	css_CommitmentLevelConsecutivePeriodCommitmentMustRemain
Namespace Prefix:	css_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest coverage ratio.

+ References

No definition available.

+ Details

Name:	css_InterestCoverageRatio
Namespace Prefix:	css_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Notice period required for company to exercise option to increase commitment level.

+ References

No definition available.

+ Details

Name:	css_NoticePeriodRequiredForCompanyToExerciseOptionToIncreaseCommitmentLevel
Namespace Prefix:	css_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Times Commitment Level Option May Be Exercised

+ References

No definition available.

+ Details

Name:	css_NumberOfTimesCommitmentLevelOptionMayBeExercised
Namespace Prefix:	css_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Revolving credit facility agreement with number of banks.

+ References

No definition available.

+ Details

Name:	css_RevolvingCreditFacilityAgreementWithNumberOfBanks
Namespace Prefix:	css_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	css_RevolvingCreditFacilityTextualAbstract
Namespace Prefix:	css_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: 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_DebtConversionOriginalDebtAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum amount borrowed under the credit facility at any time during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

+ Details

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (c)(a)

-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998

+ Details

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

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	css_CommitmentPeriodAxis=css_CommitmentPeriodLowMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	css_CommitmentPeriodAxis=css_CommitmentPeriodMediumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=css_MarchTwoThousandElevenRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=css_LIBORMarketIndexRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
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Period Type:

Revolving Credit Facility - Additional Information (Details) (USD $)	0 Months Ended		12 Months Ended
	Mar. 24, 2015	Mar. 23, 2015	Mar. 31, 2015	Mar. 31, 2014
Revolving Credit Facility (Textual) [Abstract]
Revolving credit facility agreement with number of banks	2
Notice period required for the company to exercise an option			15 days
Number of times commitment level option may be exercised			3
Unused commitment fee percentage			0.275%
Interest coverage ratio			3.50css_InterestCoverageRatio
Low [Member]
Revolving Credit Facility (Textual) [Abstract]
Commitment Level			$ 50,000,000
Consecutive period of time commitment level must remain			3 months
Low [Member] \| Minimum [Member]
Revolving Credit Facility (Textual) [Abstract]
Commitment Level			62,500,000
Low [Member] \| Maximum [Member]
Revolving Credit Facility (Textual) [Abstract]
Commitment Level			125,000,000
Medium [Member]
Revolving Credit Facility (Textual) [Abstract]
Commitment Level			100,000,000
Medium [Member] \| Maximum [Member]
Revolving Credit Facility (Textual) [Abstract]
Commitment Level			125,000,000
2011 March Revolving Credit Facility [Member]
Revolving Credit Facility (Textual) [Abstract]
Credit facility, Expiration date	Mar. 17, 2016
Credit facility maximum borrowing amount			20,000,000
Unused commitment fee percentage		0.25%
Maximum amount outstanding during period			0	0
Borrowings under the facility			0	0
Letters of Credit Outstanding			1,485,000	1,800,000
Tangible net worth of revolving credit facility			$ 170,000,000
London Interbank Offered Rate (LIBOR) [Member] \| 2011 March Revolving Credit Facility [Member]
Revolving Credit Facility (Textual) [Abstract]
LIBOR rate			0.95%
LIBOR Market Index Rate [Member] \| 2011 March Revolving Credit Facility [Member]
Revolving Credit Facility (Textual) [Abstract]
LIBOR rate			0.95%