Annual incentive compensation payable at the end of the period.

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Grant date.

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Long-term incentive compensation expense during the period relating to amortization of the grant date fair value of employee performance-based and service-based stock awards.

+ References

No definition available.

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Long-term incentive compensation expense during the period relating to amortization of the grant date fair value of employee performance-based restricted stock units.

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No definition available.

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- Definition

Share based compensation arrangement by share based payment award award vesting period.

+ References

No definition available.

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- Definition

The period of time over which the employee needs to meet the performance objectives in order to qualify for the stock unit award in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Refers to an officer that has a targeted award opportunity percentage on their base salary.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(15)(5))
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-Subparagraph (SX 210.9-03(15)(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (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.

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- Definition

Amount of selling, general and administrative expense classified as other.

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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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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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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)(1)
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- Definition

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

+ 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)(1)(iv)(3)
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

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 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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COMPENSATION PROGRAMS - Additional Information (Details) - USD ($)	1 Months Ended				3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Feb. 29, 2016	Jan. 31, 2016	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Short-term incentive compensation program accruals					$ 568,000
Dividend equivalent rights payable					$ 15,069,000		$ 18,487,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Targeted award opportunity on base salary					75.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Targeted award opportunity on base salary					125.00%
Long-Term Equity-Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares available for future issuances (in shares)					3,369,164
Dividend Equivalent Rights Program [Member] \| Accounts Payable and Accrued Liabilities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend equivalent rights payable					$ 96,000
Performance-based RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend equivalent rights payable					$ 137,000
Share awards performance period					3 years
Total original grants (in shares)	183,137	148,894	269,354		183,137
Grant date fair value per share (in dollars per share)	$ 8.71	$ 10.52	$ 8.03		$ 8.71
Forfeitures (in shares)					(117,255)
Long term incentive compensation expense					$ 3,000	$ 312,000
Performance-based RSUs [Member] \| December 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeitures (in shares)					(117,255)
Service-Based Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total original grants (in shares)					41,797
Grant date fair value per share (in dollars per share)					$ 10.05
Grant date					Jul. 31, 2017
Service-based stock awards issuance period					1 year
Service-Based Stock Awards [Member] \| Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total original grants (in shares)	126,451	74,446	67,337
Grant date fair value per share (in dollars per share)	$ 8.60	$ 10.41	$ 9.32
Share-based compensation arrangement by share-based payment award vesting period	2021-01	2020-01	2019-02
Service-Based Stock Awards [Member] \| Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total original grants (in shares)	57,283	49,416		61,272
Grant date fair value per share (in dollars per share)	$ 8.60	$ 10.41		$ 7.87
Share-based compensation arrangement by share-based payment award vesting period	2021-01	2020-01		2019-01
Stock Awards Activity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total original grants (in shares)					183,734
Grant date fair value per share (in dollars per share)					$ 8.60
Long term incentive compensation expense					$ 307,000	220,000
Other general and administrative expense					105,000	$ 105,000
Total of unrecognized compensation expense for unvested stock award					$ 2,600,000
Compensation cost not yet recognized, period for recognition					1 year 7 months 6 days