Share-Based Compensation

The compensation expense for our share-based compensation arrangements (see Restricted Stock Awards below) was $3.1 million, $2.5 million and $2.6 million for the years ended December 31, 2018, 2017 and 2016, respectively. Share-based compensation expense is included in selling, general and administrative expenses in the Consolidated Statements of Operations.

Restricted Stock Awards - Restricted stock is a grant of shares of common stock that may not be sold, encumbered or disposed of and that may be forfeited in the event of certain terminations of employment or in the case of the board of directors, a separation for cause, prior to the end of a restricted period set by the compensation committee of the board of directors. A participant granted restricted stock generally has all of the rights of a stockholder, unless the compensation committee determines otherwise.

The following table summarizes information about unvested restricted stock grants (in thousands):



Grant	Shares	Vesting Schedule	Unearned Compensation		Remaining Period (in months)
October 2016	411	3 equal annual installments commencing on October 20, 2017	$	528.1	10
July 2017	6	3 equal annual installments commencing on October 20, 2017	$	13.3	10
October 2017	303	3 equal annual installments commencing on October 20, 2018	$	1,673.7	22
May 2018	64	Shares granted to outside board members that fully vest as of May 16, 2019	$	180.0	4
October 2018	382	3 equal annual installments commencing on October 20, 2019	$	2,444.9	34

As of December 31, 2018, there was approximately $4.8 million of unrecognized compensation expense related to non-vested share-based compensation arrangements granted under our equity incentive plans. This expense is subject to future adjustments and forfeitures and will be recognized on a straight-line basis over the remaining period listed above for each grant.

A summary of the status of our restricted stock awards as of December 31, 2018 and changes during the twelve-month period ending December 31, 2018, 2017 and 2016 is presented below:



	2018				2017				2016
	Shares (000’s)		Weighted- Average Grant-Date Fair Value		Shares (000’s)		Weighted- Average Grant-Date Fair Value		Shares (000’s)		Weighted- Average Grant-Date Fair Value
Nonvested - beginning of year	787		$	6.84	981		$	4.70	1,128		$	4.24
Granted	446		$	7.20	354		$	9.77	571		$	5.05
Vested	(452	)	$	5.97	(509	)	$	4.90	(558	)	$	4.68
Forfeited	(21	)	$	7.31	(39	)	$	4.84	(160	)	$	4.35
Nonvested - end of year	760		$	7.56	787		$	6.84	981		$	4.70

As of December 31, 2018, a total of 2.1 million shares were available for future grants from the shares authorized for award under our 2014 Equity Incentive Plan, including cumulative forfeitures.

Repurchase of Common Stock - We did not repurchase any of our common stock on the open market as part of a stock repurchase program during 2018; however, our employees surrendered 158 thousand shares of our common stock to satisfy tax withholding obligations on the vesting of the restricted stock awards.