STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Stock-Based Compensation Expense

Stock-based compensation expense, all related to employees and non-employee directors, was recognized as follows:

	Year Ended December 31,
	2021		2020
	(In Thousands)
Selling and marketing	$	2,808	2,530
General and administrative	6,686		$	5,607
Research and development	2,041		1,831
Cost of goods sold	321		389
Total stock-based compensation expense	11,856		10,357

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

The following table summarizes restricted stock awards and restricted stock units granted to SeaSpine employees and non-employee directors during 2021:

	Restricted Stock Awards and Units
	Shares (In thousands)	Weighted Average Grant Date Fair Value Per Share
Unvested, January 1, 2021	797	$12.71
Granted	499	17.32
Cancellations	(66)	14.96
Released/Vested	(455)	12.51
Unvested, December 31, 2021	775	15.60

Schedule of Valuation Assumptions for Stock Options

The following weighted-average assumptions were used in the calculation of fair value for options granted during the period indicated.

	Year Ended December 31,
	2021		2020
Expected dividend yield	0	%	0	%
Risk-free interest rate	0.6	%	1.3	%
Expected volatility	51.7	%	46.4	%
Expected term (in years)	4.9		4.9

Schedule of Stock Option Activity

A summary of the options granted during 2021 and the total number of options outstanding as of December 31, 2021 and changes since January 1, 2021 are set forth below:

	Number of Shares Outstanding (In thousands)	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (In years)	Aggregate Intrinsic Value (In thousands)
Outstanding, January 1, 2021	3,318	$	14.33	4.67	$	10,667
Granted	1,137	$	18.50
Exercised	(168)	$	12.66
Forfeited	(104)	$	14.98
Outstanding, December 31, 2021	4,183	$	15.51	4.59	$	2,059
Vested or expected to vest, December 31, 2021	4,072	$	15.41	4.52	$	2,049
Exercisable, December 31, 2021	2,601	$	14.55	3.23	$	1,521

Schedule of Valuation Assumptions for ESPP

The following weighted average assumptions were used in the calculation of fair value of shares under the ESPP at the grant date for the periods indicated:

	Year Ended December 31,
	2021		2020
Expected dividend yield	0	%	0	%
Risk-free interest rate	0.1	%	0.7	%
Expected volatility	40.7	%	24.6	%
Expected term (in years)	0.8		0.7