Share-Based Payments (Tables)

12 Months Ended

Dec. 31, 2017

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

A summary of changes in the Company’s nonvested shares and related information for the years ended December 31, 2017, 2016 and 2015 is presented below:



Nonvested Shares	Shares		Weighted Average Grant-Date Fair Value
Nonvested at January 1, 2015	519,785		$	23.03
Granted	306,007		$	28.57
Vested	(131,775	)	$	21.55
Forfeited	(28,315	)	$	24.79
Nonvested at December 31, 2015	665,702		$	25.80
Granted	335,593		$	28.40
Vested	(153,235	)	$	23.80
Forfeited	(29,305	)	$	27.13
Nonvested at December 31, 2016	818,755		$	25.81
Granted	337,384		$	38.51
Vested	(253,509	)	$	25.67
Forfeited	(96,924	)	$	28.97
Nonvested at December 31, 2017	805,706		$	25.89

Schedule of Share-based Compensation, Stock Options, Activity

A summary of option activity under the Plan as of December 31, 2017, and changes during the year then ended is presented below:



Options	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value ($000)
Balance at December 31, 2016	23,429		$	45.98
Forfeited	(577	)	$	54.70
Expired	(2,284	)	$	135.97
Exercised	(2,242	)	$	10.05
Balance at December 31, 2017	18,326		$	38.88	0.7	$	214
Vested or expected to vest at December 31, 2017	18,326		$	38.88	0.7	$	214
Total Exercisable at December 31, 2017	18,326		$	38.88	0.7	$	214

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

As of December 31, 2017, outstanding stock options consist of the following:



Ranges of Exercise Prices	Number of Option Shares	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price of Option Shares		Number of Exercisable Option Shares	Weighted Average Exercise Price of Exercisable Option Shares
$0.00 - $9.99	6,393	1.3	$	9.91	6,393	$	9.91
$40.00 - $49.99	349	0.5	$	44.49	349	$	44.49
$50.00 - $136.93	11,584	0.3	$	54.70	11,584	$	54.70
	18,326	0.7	$	38.88	18,326	$	38.88