Shareholders Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Stockholders Equity Note [Line Items]
Cash dividends paid per share of Common and Class B common stock	$ 0.40	$ 0.25
Shares of non-vested restricted stock granted	183,025	85,543
Common stock issued under employee stock purchase plan, shares	2,062	2,182
Common stock issued under employee stock purchase plan, net proceeds	$ 190	$ 159
Non-cash contribution to 401(k) plan	1,759	1,689
401(k) Plan
Stockholders Equity Note [Line Items]
Non-cash contribution to 401(k) plan, shares	18,309	22,551
Non-cash contribution to 401(k) plan	1,759	1,689
Carrier Enterprise I
Stockholders Equity Note [Line Items]
Controlling interest, ownership percentage	70.00%
Noncontrolling interest, ownership percentage	30.00%
Carrier Enterprise II
Stockholders Equity Note [Line Items]
Controlling interest, ownership percentage	60.00%
Noncontrolling interest, ownership percentage	40.00%
Carrier Enterprise III
Stockholders Equity Note [Line Items]
Controlling interest, ownership percentage	60.00%
Noncontrolling interest, ownership percentage	40.00%
Common Stock
Stockholders Equity Note [Line Items]
Stock options exercised, shares	12,250	7,000
Stock options exercised, value	$ 683	$ 338

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

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Paragraph 14

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- Definition

Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan.

+ References

No definition available.

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- Definition

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

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- Definition

Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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- Definition

Number of share options (or share units) exercised during the current period.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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-Section 02

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- Definition

Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

+ References

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