Represents the first level of employee contributions (percentage of compensation) which are matched by the employer.

No definition available.

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- Definition

Represents the second level of employee contributions (percentage of compensation) which are partially matched by the employer.

+ References

No definition available.

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Represents the employer matching contribution of the first level of qualified compensation.

+ References

No definition available.

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Represents the employer matching contribution of the second level of qualified compensation.

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, First and Second Anniversary, Percentage

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No definition available.

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Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Third Anniversary, Percentage

+ References

No definition available.

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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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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

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-Subparagraph (SAB TOPIC 14.F)

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

+ References

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-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

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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

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-Paragraph 2

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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

The aggregate amount of expenditures for salaries, wages, profit sharing and incentive compensation, and other employee benefits, including equity-based compensation, and pension and other postretirement benefit expense.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

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- Definition

The amount of pension benefit costs recognized during the period for (1) defined benefit plans and (2) defined contribution plans. For defined benefit plans, pension expense includes the following components: service cost, interest cost, expected return on plan assets, gain (loss) on plan assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. For defined contribution plans, the pension expense generally equals the firm's contribution to employees' accounts (if the firm contributes) during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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-Name Accounting Standards Codification

-Topic 715

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-Paragraph 1

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- Definition

Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

+ References

No definition available.

+ Details

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- Definition

Percentage of vesting of share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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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).

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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-Subparagraph (a)(3)

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

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- Definition

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

+ 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

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-Subparagraph (SX 210.3-04)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

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STOCK OWNERSHIP AND BENEFIT PLANS - Narrative (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended			100 Months Ended	0 Months Ended
	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Mar. 01, 2013
Stock ownership and benefit plans [Line Items]
Number of shares authorized		1,617,500			1,617,500
Number of shares available for future grant		400,279			400,279
Expenses associated with management retirements	$ 2,965us-gaap_LaborAndRelatedExpense
Stock-based compensation	894
401(k) Plan [Abstract]
Matching employer contributions on first level of qualified compensation (as a percent)		100.00%
Percentage of qualified compensation, first level, matched by employer		3.00%
Matching employer contributions on second level of qualified compensation (as a percent)		50.00%
Percentage of qualified compensation, second level, matched by employer		2.00%
Total DMC contributions		523	485	431
Defined Benefit Plans [Abstract]
Unfunded pension obligation		1,143	910		1,143
Net adjustments recognized		349us-gaap_PensionExpense	67us-gaap_PensionExpense	235us-gaap_PensionExpense
Employee Stock Purchase Plan [Member]
Stock ownership and benefit plans [Line Items]
Number of shares authorized		600,000			600,000
Number of shares available for future grant		115,218			115,218
Stock-based compensation		92	76	58
Employee Stock Purchase Plan [Abstract]
Percentage of earnings that may be authorized by employees to withhold to purchase common stock		15.00%			15.00%
Shares purchased		20,148	22,689	14,717
Employee Stock Purchase Plan [Member] \| Maximum [Member]
Employee Stock Purchase Plan [Abstract]
Percentage of fair market value of the entity's common stock used to purchase common stock on the Offering Date or Purchase Date		85.00%
Restricted stock and restricted stock units
Stock ownership and benefit plans [Line Items]
Aggregate number of shares granted					1,217,221
Restricted stock [Member]
Stock ownership and benefit plans [Line Items]
Aggregate number of shares granted		157,680	163,579	116,900
Accelerated recognition of stock-based compensation expense associated with planned retirement of CEO				672
Unrecognized stock-based compensation [Abstract]
Unrecognized stock-based compensation cost related to unvested awards		2,548			2,548
Weighted average period over which the cost is expected to be recognized		1 year 7 months 17 days
Restricted stock [Member] \| President and Chief Executive Officer [Member]
Stock ownership and benefit plans [Line Items]
Aggregate number of shares granted						30,000
Restricted stock units [Member]
Stock ownership and benefit plans [Line Items]
Aggregate number of shares granted		33,895	56,217	50,200
Unrecognized stock-based compensation [Abstract]
Unrecognized stock-based compensation cost related to unvested awards		$ 738			738
Weighted average period over which the cost is expected to be recognized		1 year 7 months 10 days
Restricted stock awards and restricted stock units, time-based
Stock ownership and benefit plans [Line Items]
Vesting percentage		33.33%
Restricted stock awards and restricted stock units, performance-based
Stock ownership and benefit plans [Line Items]
Vesting percentage, first and second anniversary		25.00%
Vesting percentage, third anniversary		50.00%