SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Changes in Restricted Common Shares) (Details) - $ / shares	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2021
Performance Shares [Member]
Number of Shares
Balance at Beginning		221,600
Shares granted	0	51,710
Vested		(36,032)
Forfeited		(11,843)
Balance at end	225,435	225,435
Weighted Average Grant Date Fair Value
Balance at Beginning		$ 20.47
Granted		31.36
Vested		35.33
Forfeited		26.32
Balance at end	$ 20.29	$ 20.29
Restricted stock [Member]
Number of Shares
Balance at Beginning		777,166
Shares granted	21,200	211,356
Vested		(252,316)
Forfeited		(23,314)
Balance at end	712,892	712,892
Weighted Average Grant Date Fair Value
Balance at Beginning		$ 19.24
Granted		31.36
Vested		22.01
Forfeited		16.55
Balance at end	$ 21.94	$ 21.94

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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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).

+ References

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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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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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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