At December 31, 2020, we had five stock-based compensation plans: the Non-Employee Directors' Stock Retirement Plan ("Directors' Plan"), the 2004 Omnibus Long-Term Incentive Plan ("2004 Plan"), the 2009 Omnibus Equity and Performance Incentive Plan ("2009

Plan"), the 2014 Performance & Incentive Plan ("2014 Plan"), and the 2018 Equity and Incentive Compensation Plan ("2018 Plan"). Future grants can only be made under the 2018 Plan.

These plans allow for grants of stock options, stock appreciation rights, restricted stock, restricted stock units ("RSUs"), performance shares, performance units, and other stock awards subject to the terms of the specific plans under which the awards are granted.

The following table summarizes the compensation expense included in selling, general and administrative expenses in the Consolidated Statements of Earnings related to stock-based compensation plans:

	Years Ended December 31,
	2020		2019		2018
Service-Based RSUs	$	2,601	$	2,207	$	2,036
Performance-Based RSUs		539		2,553		3,089
Cash-settled awards		277		255		131
Total	$	3,417	$	5,015	$	5,256
Income tax benefit		786		1,133		1,188
Net	$	2,631	$	3,882	$	4,068

The fair value of all equity awards that vested during the periods ended December 31, 2020, 2019, and 2018 were $5,680, $6,589, and $5,805, respectively. We recorded a tax deduction related to equity awards that vested during the year ended December 31, 2020, in the amount of $1,285.

The following table summarizes the unrecognized compensation expense related to non-vested RSUs by type and the weighted-average period in which the expense is to be recognized:

	Unrecognized compensation expense at December 31, 2020		Weighted- average period
Service-Based RSUs	$	2,039	1.27 years
Performance-Based RSUs		1,893	1.76 years
Total	$	3,932	1.50 years

We recognize expense on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in substance, multiple awards.

The following table summarizes the status of these plans as of December 31, 2020:

	2018 Plan		2014 Plan		2009 Plan		2004 Plan		Directors' Plan
Awards originally available to be granted		2,500,000		1,500,000		3,400,000		6,500,000	N/A
Performance stock options outstanding		—		—		—		—		—
Maximum potential RSU and cash settled awards outstanding		503,481		178,900		92,600		35,952		5,522
Maximum potential awards outstanding		503,481		178,900		92,600		35,952		5,522
RSUs and cash settled awards vested and released		45,539		—		—		—		—
Awards available to be granted		1,950,980		—		—		—		—

Service-based RSUs entitle the holder to receive one share of common stock for each unit when the unit vests. RSUs are issued to officers, key employees, and non-employee directors as compensation. Generally, the RSUs vest over a three-year period. RSUs granted to non-employee directors vest one year after being granted. Upon vesting, the non-employee directors elect to either receive the stock associated with the RSU immediately or defer receipt of the stock to a future date. The fair value of the RSUs is equivalent to the trading value of our common stock on the grant date.

A summary of RSU activity for the year ended December 31, 2020 is presented below:

	Units		Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at January 1, 2020		364,396	$	19.87
Granted		120,546		27.94
Released		(100,830)		22.90
Forfeited		(16,684)		28.75
Outstanding at December 31, 2020		367,428	$	21.28		19.69	$	12,614
Releasable at December 31, 2020		203,574	$	15.77		30.66	$	6,989

	Years Ended December 31,
	2020		2019		2018
Weighted-average grant date fair value	$	27.94	$	28.61	$	26.95
Intrinsic value of RSUs released	$	2,503	$	2,155	$	4,015

A summary of non-vested RSU activity for the year ended December 31, 2020 is presented below:

	RSUs		Weighted Average Grant Date Fair Value
Nonvested at January 1, 2020		136,922	$	27.66
Granted		120,546		27.94
Vested		(76,930)		26.86
Forfeited		(16,684)		28.75
Nonvested at December 31, 2020		163,854	$	28.13

We grant performance-based restricted stock unit awards ("PSUs") to certain executives and key employees. Units are usually awarded in the range from zero percent to 200% of a targeted number of shares. The award rate for the 2018-2020, 2019-2021, and 2020-2022 PSUs is dependent upon our achievement of sales growth targets, cash flow targets, and relative total shareholder return ("RTSR") using a matrix based on the percentile ranking of our stock price performance compared to a peer group over a three-year period. Other PSUs are granted from time to time based on other performance criteria. The initial fair value of the PSUs is equivalent to the trading value of our common stock on the grant date. The fair value is subsequently adjusted quarterly based on management's assessment of the Company's performance relative to the target number of shares performance criteria.

A summary of PSU activity for the year ended December 31, 2020 is presented below:

	Units		Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at January 1, 2020		217,229	$	27.73
Granted		126,521		28.37
Added by performance factor		38,820		23.84
Released		(111,838)		23.74
Forfeited		(45,173)		28.69
Outstanding at December 31, 2020		225,559	$	29.07		1.90	$	7,743
Releasable at December 31, 2020		—	$	—			$	—

The following table summarizes each grant of performance awards outstanding at December 31, 2020:

Description	Grant Date	Vesting Year	Vesting Dependency	Target Units Outstanding		Maximum Number of Units to be Granted
2018 - 2020 Performance RSUs	February 8, 2018	2020	35% RTSR, 35% sales growth, 30% operating cash flow		22,082		44,164
2018 - 2020 Performance RSUs	February 16, 2018	2020	35% RTSR, 35% sales growth, 30% operating cash flow		31,820		63,640
2019-2021 Performance RSUs	February 7, 2019	2021	35% RTSR, 35% sales growth, 30% operating cash flow		50,456		100,912
2019 Supplemental Performance RSUs	February 7, 2019	2021	Succession Planning Targets		6,945		13,890
2020 - 2020 QTI Performance RSUs	September 24, 2019	2022	50% EBITDA growth, 50% Sales growth		1,750		3,500
2020 - 2022 Performance RSUs	February 6, 2020	2022	25% RTSR, 40% sales growth, 35% operating cash flow		63,006		126,012
Focus 2025 Performance RSUs	April 23, 2020	2024	Cumulative revenues of $750 million over a trailing four-quarter period		49,500		49,500
Total					225,559		401,618

Cash-Settled RSUs entitle the holder to receive the cash equivalent of one share of common stock for each unit when the unit vests. These RSUs are issued to key employees residing in foreign locations as direct compensation. Generally, these RSUs vest over a three-year period. Cash-settled RSUs are classified as liabilities and are remeasured at each reporting date until settled. At December 31, 2020, and 2019, we had 30,009 and 17,271 cash-settled RSUs outstanding, respectively. At December 31, 2020, and 2019, liabilities of $396 and $353, respectively were included in Accrued expenses and other liabilities on our Consolidated Balance Sheets.