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Stock-Based Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement, Noncash Expense [Abstract]

Schedule of components of stock compensation expense

The components of stock-based compensation expense were as follows:

			Three months ended September 30,												Nine Months Ended September 30,
			2021						2020						2021						2020
			(in thousands)												(in thousands)
2007 Stock Incentive Plan			$	9					$	707					$	1,651					$	2,435
2018 Stock Incentive Plan			4,517						2,329						10,023						5,626
Employee Stock Purchase Plan			51						77						201						184
Total Stock Compensation Expense			$	4,577					$	3,113					$	11,875					$	8,245

Summary of restricted stock activity

The following table summarizes restricted stock activity under the 2007 and 2018 Plans during the nine months ended September 30, 2021:

			Shares
Balance of unvested shares as of December 31, 2020			581,715
Shares granted			286,550
Shares forfeited			—
Shares vested			(339,657)
Balance of unvested shares as of September 30, 2021			528,608

X

- Definition

Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

+ 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 (h)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Tabular disclosure of the changes in outstanding nonvested restricted stock units.

+ 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)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- References

No definition available.

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