Intrinsic value of equity-based compensation awards exercisable. Excludes stock and unit options.

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The number of shares into which fully or partially vested equity instruments other than options outstanding as of the balance sheet date can be currently converted under the plan.

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No definition available.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of equity instruments other than options outstanding and currently exercisable under the stock option plan.

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No definition available.

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Weighted average remaining contractual term for vested portions of equity instruments other than options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were expired during the reporting period.

+ References

No definition available.

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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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 number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Subparagraph (e)(1)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

+ References

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- References

No definition available.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(1)
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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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No definition available.

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No definition available.

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Intrinsic value of equity-based compensation awards outstanding. Excludes stock and unit options.

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No definition available.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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STOCK-BASED COMPENSATION - Liability-Classified Stock Compensation Activity (Details) - 2001 Plan - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2010	Dec. 31, 2009
Stock-based compensation
Award plan, number of common stock that may be issued				500,000
Stock Option
Stock-based compensation
Awards available for issue ( in shares)			0
Stock Options, Shares
Stock based compensation, Shares Outstanding, beginning balance	11,000
Stock based compensation, Shares, Granted	0	0
Stock based compensation, Shares, Expired	(5,000)
Stock based compensation, Shares Outstanding, ending balance	6,000
Stock based compensation, Shares, Exercisable	6,000
Stock Options, Weighted Average Fair Value
Stock based compensation, Weighted Average Exercise Price, beginning balance	$ 63.87
Stock based compensation, Weighted Average Exercise Price, Expired	77.25
Stock based compensation, Weighted Average Exercise Price, ending balance	52.73
Stock based compensation, Weighted Average Exercise Price, Exercisable	$ 52.73
Stock Options, Weighted Average Remaining Contractual Term
Stock based compensation, Weighted Average Remaining Contractual Term, Outstanding	9 months 26 days
Stock based compensation, Weighted Average Remaining Contractual Term, Exercisable	9 months 26 days
Stock based compensation, Aggregate Intrinsic Value, Outstanding	$ 4,860
Stock based compensation, Aggregate Intrinsic Value, Exercisable	$ 4,860
Stock Appreciation Rights
Share-based Compensation, Other Than Options, Shares
Outstanding (in shares)	11,000
Granted (in shares)	0	0
Expired (in shares)	(5,000)
Outstanding (in shares)	6,000
Stock based compensation, Shares, Exercisable	6,000
Share-based Compensation, Other Than Options, Weighted Average Fair Value
Stock based compensation, Weighted Average Fair Value Per Share, beginning balance	$ 1.33
Stock based compensation, Weighted Average Fair Value Per Share, ending balance	1.64
Stock based compensation, Weighted Average Fair Value Per Share, Exercisable	$ 1.64
Share-based Compensation, Other Than Options, Weighted Average Remaining Contractual Term
Share based compensation, Weighted Average Remaining Contractual Term, Outstanding	9 months 26 days
Share based compensation, Weighted Average Remaining Contractual Term, Exercisable	9 months 26 days
Share-based Compensation, Other Than Options, Aggregate Intrinsic Value
Share based compensation, Aggregate Intrinsic Value, Outstanding	$ 2,617
Share based compensation, Aggregate Intrinsic Value, Exercisable	$ 2,617