STOCKHOLDERS’ EQUITY

Stock Repurchase Program

During the nine months ended September 30, 2019, the Company did not repurchase any shares of its Common Stock. During the nine months ended September 30, 2018, the Company repurchased and retired 432,439 shares of its Common Stock for $5.0 million, at an average market price of $11.54 per share, under an authorized share repurchase program.

As of September 30, 2019, the Company has 510,004 shares of Common Stock under the current share repurchase program available to repurchase, subject to certain conditions in the Company's Amended and Restated Credit Agreement.

Share-Based Payments

The following table summarizes restricted stock awards and performance stock awards activity issued under the 2017 Plan for the nine months ended September 30, 2019:



	Restricted Stock Awards				Performance Stock Awards
	Number of Shares		Weighted Average Grant Date Fair Value		Number of Target Shares		Weighted Average Grant Date Fair Value
Unvested restricted stock awards, January 1, 2019	589,120		$	12.00	365,149		$	12.35
Granted	837,099		$	7.06	192,939		$	7.06
Vested	(331,395	)	$	11.66	—		$	—
Forfeited	(84,515	)	$	9.26	(189,619	)	$	12.25
Unvested restricted stock awards, September 30, 2019	1,010,309		$	8.52	368,469		$	9.64

Restricted stock awards granted under the Company’s 2017 Plan entitle the holder to receive, at the end of a vesting period, a specified number of shares of the Company’s common stock. Share-based compensation expense is measured by the market value of the Company’s stock on the date of grant. The shares vest ratably over a three year period ending on the anniversary date of the grant, and vesting is subject to the employee's continuing employment. There is no partial vesting and any unvested portion is forfeited. Pursuant to the 2017 Plan, the number of target shares that are issued for performance-based stock awards are determined based on the level of attainment of the targets.

During the three and nine months ended September 30, 2019, $1.0 million and $2.5 million, respectively, was included in selling, general and administrative expenses related to share-based payments, and a net of 5,233 and 230,986 shares, respectively, of Common Stock were issued upon the vesting of restricted stock.

During the three and nine months ended September 30, 2018, $1.0 million and $2.4 million, respectively, was included in selling, general and administrative expenses related to share-based payments, and a net of 5,460 and 155,914 shares, respectively, of Common Stock were issued upon the vesting of restricted stock.