Stock Based Compensation - Non-vested Restricted Stock, PSU and RSU Award Activity (Details) - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restricted Stock
Number of Non-vested Restricted Shares
Non-vested shares at beginning of period (in shares)			837,123	507,536
Granted (in shares)			1,054,254	536,242
Vested (in shares)			(287,611)	(205,080)
Forfeited (in shares)	0	(1,575)	0	(1,575)
Non-vested shares at end of period (in shares)	1,603,766	837,123	1,603,766	837,123
Weighted Average Per Share Grant Date Fair Value
Non-vested shares at beginning of period (in dollars per share)			$ 6.18	$ 5.91
Granted (in dollars per share)			6.33	6.30
Vested (in dollars per share)			6.22	5.85
Forfeited (in dollars per share)			0	6.35
Non-vested shares at end of period (in dollars per share)	$ 6.27	$ 6.18	$ 6.27	$ 6.18
Performance Share Awards
Number of Non-vested Restricted Shares
Non-vested shares at beginning of period (in shares)			2,018,518	842,792
Granted (in shares)			883,496	1,175,726
Vested (in shares)			0	0
Non-vested shares at end of period (in shares)	2,902,014	2,018,518	2,902,014	2,018,518
Weighted Average Per Share Grant Date Fair Value
Non-vested shares at beginning of period (in dollars per share)			$ 4.09	$ 4.20
Granted (in dollars per share)			7.03	4.01
Vested (in dollars per share)			0	0
Non-vested shares at end of period (in dollars per share)	$ 4.98	$ 4.09	$ 4.98	$ 4.09
RSUs
Number of Non-vested Restricted Shares
Non-vested shares at beginning of period (in shares)			0
Granted (in shares)			441,746
Vested (in shares)			0
Non-vested shares at end of period (in shares)	441,746		441,746
Weighted Average Per Share Grant Date Fair Value
Non-vested shares at beginning of period (in dollars per share)			$ 0
Granted (in dollars per share)			6.23
Vested (in dollars per share)			0
Non-vested shares at end of period (in dollars per share)	$ 6.23		$ 6.23

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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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).

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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).

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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.

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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.

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

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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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Weighted average grant-date fair value of non-vested options forfeited.

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