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Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Non-Vested Restricted Stock Units

Non-vested RSUs outstanding as of December 31, 2019 and the changes during the year were as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2018	2,188,965			$	7.66
Granted	1,756,125			6.49
Vested	(1,138,654	)		7.87
Forfeited	(345,636	)		6.81
Non-vested at December 31, 2019	2,460,800			$	6.65

Schedule of Weighted Average Assumptions for PRSUs

The weighted average assumptions for the PRSUs granted in 2019 are as follows:

	2019
Total expected term (in years)	2.86
Expected volatility	43.5%
Risk-free interest rate	2.48%
Correlation range	2.4% to 88.1%

The weighted average assumptions for the PRSUs granted in 2017 are as follows:

	2017
Expected term (in years)	2.92
Expected volatility	42.1%
Risk-free interest rate	1.51%
Correlation range	26.8% to 76.0%

The weighted average assumptions for the PRSUs granted in 2018 are as follows:

	2018
Expected term (in years)	2.86
Expected volatility	39.0%
Risk-free interest rate	2.35%
Correlation range	11.0% to 85.7%

Schedule of Non-Vested PRSU's Outstanding

Non-vested PRSUs outstanding as of December 31, 2019 and the changes during the year were as follows:

	Number of Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2018	593,987			$	8.06
Granted	446,858			8.22
Forfeited	(252,012	)		7.96
Non-vested at December 31, 2019	788,833			$	8.13

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Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

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)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Tabular disclosure of number and weighted-average grant date fair value for nonvested performance shares.

+ References

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)
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