Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of recognized stock-based compensation expense

The following table summarizes share-based compensation expense recognized:

	Years ended December 31,
	2017		2016		2015
Restricted stock units	$	4,231	$	6,263	$	3,705
Phantom stock units		163		117		141
Stock options		-		-		-
Total	$	4,394	$	6,380	$	3,846

Schedule of unrecognized compensation cost, nonvested awards

The following table summarizes unrecognized compensation cost and the weighted average remaining amortization periods at December 31, 2017 (amortization periods in years):

	Unrecognized Compensation Cost		Weighted Average Remaining Amortization Periods
Restricted stock units	$	2,900		1.0
Phantom stock units		-		0.0
Stock options		-		0.0
Total	$	2,900

Restricted Stock Units Activity

RSU activity is presented below (number of RSUs in thousands):

	Years ended December 31,
	2017					2016					2015
	Number of RSUs			Weighted Average Grant-date Fair Value		Number of RSUs			Weighted Average Grant-date Fair Value		Number of RSUs			Weighted Average Grant-date Fair Value
Outstanding:
Beginning of year		1,004		$	12.74		1,028		$	13.24		1,147		$	12.75
Granted		304			15.52		353			11.35		349			13.60
Vested*		(322	)		13.54		(155	)		12.27		(182	)		11.41
Cancelled or forfeited		-			-		(222	)		13.19		(286	)		12.89
End of year		986		$	13.34		1,004		$	12.74		1,028		$	13.24
Expected to vest		986					1,004					806

* The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements.

Schedule of share-based compensation arrangement by share-based payment award, performance-based units, vested and expected to vest

The number of performance-based RSUs scheduled to vest increases ratably based on the achievement of defined performance criteria between the established target and maximum levels.  RSUs with performance-based vesting criteria are expected to vest as follows (number of RSUs in thousands):

Vesting Date	Expected to Vest		Not Expected to Vest		Total
January 1, 2018**		202		-		202
January 1, 2019		213		-		213
January 1, 2020		167		-		167

** The performance vesting criteria for the performance-based RSUs with a vesting date of January 1, 2018 were achieved.

Phantom stock units activity under the 2007 Program

The following table summarizes the Company's phantom stock units activity (number of phantom stock units in thousands):

	Years ended December 31,
	2017				2016				2015
	Number of Phantom Stock Units		Grant- date Fair Value per Unit		Number of Phantom Stock Units		Grant- date Fair Value per Unit		Number of Phantom Stock Units		Grant- date Fair Value per Unit
Outstanding:
Beginning of year		145				132				119
Granted		10	$	16.25		10	$	11.71		10	$	14.09
Dividend equivalents issued		2				3				3
Redeemed for common stock		-				-				-
End of year		157				145				132