Annual cash retainer approved to be paid to audit committee chair

No definition available.

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- Definition

Annual cash retainer approved to be paid to compensation and corporate governance committee chair.

+ References

No definition available.

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- Definition

Annual cash retainer approved to be paid to each independent director, in quarterly installments.

+ References

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- Definition

Annual cash retainer approved to be paid to each independent director for each regular or special meeting.

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- Definition

Annual equity retainer approved to be paid to each independent director. To be paid in shares of entity common stock.

+ References

No definition available.

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- Definition

Directors Compensation, Each Independent Director, Grant of Stock Awards Upon Appointment, Amount

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No definition available.

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- Definition

Pre tax compensation expense related to director fees, annual retainers, and deferred compensation amortization.

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No definition available.

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- Definition

Annual cash retainer approved to be paid to lead director, in quarterly installments.

+ References

No definition available.

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- Definition

Annual cash retainer approved to be paid to other committee members and chairment for each regular or special meeting.

+ References

No definition available.

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- Definition

Weighted average purchase price of capital shares purchased through an employee stock purchase plan.

+ References

No definition available.

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- Definition

The number of options outstanding and unvested as of the end of the period.

+ References

No definition available.

+ Details

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Paragraph 2

-Subparagraph (h)(1)(i)

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

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

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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- Definition

Percentage of vesting of share-based compensation awards.

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-SubTopic 10

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Paragraph 2

-Subparagraph (a)(2)

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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-Subparagraph (c)(1)(i)-(ii)

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Value, after forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP).

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Number of shares issued during the period as a result of an employee stock purchase plan.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Number 210

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Stockholders' Equity (Narrative) (Details) (USD $)	3 Months Ended		0 Months Ended
Stockholders' Equity (Narrative) (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Mar. 25, 2015	Feb. 24, 2015	Mar. 03, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized share based compensation, expected term (in Duration)	2 years 8 months 7 days
Directors compensation expense	$ 92,000csv_DirectorsCompensationExpense	$ 175,000csv_DirectorsCompensationExpense
Common Stock, Dividends, Per Share, Declared	$ 0.025	$ 0.025
Director Compensation Policy [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Directors Compensation, Each Independent Director, Grant of Stock Awards Upon Appointment, Amount	100,000
Directors fees approved under new Directors Compensation Policy, audit committee chair	17,500
Directors fees approved under new Directors Compensation Policy, compensation and corporate governance chair	15,000
Directors fees approved under new Directors Compensation Policy, lead director	115,000
Directors fees approved under new Directors Compensation Policy, each independent director	40,000
Directors fees approved under new Directors Compensation Policy, each independent director per regular or scheduled meeting	75,000
Directors fees approved under new Directors Compensation Policy, other committee members and chairs	2,000
Directors fees approved under new Directors Compensation Policy	1,600
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased through Employee Stock Purchase Plan (in Shares)	12,408
Weighted average purchase price of ESPP shares purchased during the period (in Dollars per share)	$ 17.14
Share-based compensation expense	73,000	116,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	400,000	349,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	37,900
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	900,000
Unrecognized share based compensation	4,700,000
Restricted Stock \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation awards, annual vesting percentage	25000.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted Stock \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation awards, annual vesting percentage	33330.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation awards, options outstanding at period end (in Shares)	1,985,755
Share based compensation awards, options outstanding and unvested at period end (in Shares)	1,441,473
Share-based compensation awards, options granted			25,000	628,000
Share-based compensation awards, exercise price			$ 24.74	$ 22.58
Share-based compensation awards, annual vesting percentage			33330.00%	33330.00%
Share-based compensation expense	600,000	256,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	7 years		7 years
Stock Granted, Value, Share-based Compensation, Net of Forfeitures	3,700,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Dividends, Per Share, Declared					$ 0.025
Dividends, Common Stock, Cash	$ 500,000