Retirement and Share-based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2013

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

Valuation Assumptions of Stock Options Granted to Officers, Directors and Employees

The fair value for each stock option granted to officers, directors and employees during the years ended December 31, 2012 and 2011 was estimated at the date of grant using a Black-Scholes option valuation model with the following assumptions:



	Year Ended December 31,
	2012				2011
	Directors and Retirement Eligible Employees		Non-Retirement Eligible Employees		Directors and Retirement Eligible Employees		Non-Retirement Eligible Employees
Average risk-free interest rate	0.76	%	1.36	%	1.66	%	2.00	%
Dividend yield	1.1	%	1.3	%	0.8	%	1.0	%
Average expected life (years)	5		8		5		8
Volatility	62.5	%	50.9	%	66.1	%	52.0	%

Valuation Assumptions of Stock Options Granted to Agents

The fair value for each stock option granted to agents during the years ended December 31, 2013, 2012 and 2011 was estimated using a Black-Scholes option valuation model until the grant date, at which time the options are included as permanent equity, with the following assumptions:



	Year Ended December 31,
	2013		2012		2011
Average risk-free interest rate	1.21	%	0.51	%	0.58	%
Dividend yield	0.7	%	1.2	%	1.2	%
Average expected life (years)	3.75		3.75		3.75
Volatility	31.2	%	41.1	%	67.2	%

Schedule of Stock Options Outstanding

Changes in the number of stock options outstanding during the years ended December 31, 2013, 2012 and 2011 are as follows:



	Number of Shares		Weighted-Average Exercise Price per Share		Total Exercise Price
	(Dollars in thousands, except per share data)
Outstanding at January 1, 2011	4,120,850		$	8.78	$	36,187
Granted	1,486,850		12.99		19,309
Canceled	(177,500	)	9.66		(1,714		)
Exercised	(585,350	)	8.00		(4,685		)
Outstanding at December 31, 2011	4,844,850		10.13		49,097
Granted	1,558,900		10.40		16,216
Canceled	(28,050	)	8.97		(251		)
Exercised	(643,250	)	8.93		(5,741		)
Outstanding at December 31, 2012	5,732,450		10.35		59,321
Granted	1,210,950		13.13		15,899
Canceled	(29,400	)	9.96		(293		)
Exercised	(2,937,275	)	10.81		(31,756		)
Outstanding at December 31, 2013	3,976,725		10.86		$	43,171

Schedule of Stock Options Outstanding, By Exercise Price Range

The following table summarizes information about stock options outstanding at December 31, 2013:



	Stock Options Outstanding				Stock Options Vested
Range of Exercise Prices	Number of Awards	Remaining Life (yrs)	Weighted-Average Exercise Price Per Share		Number of Awards	Remaining Life (yrs)	Weighted-Average Exercise Price Per Share
$5.07 - $9.16	756,550	3.17	$	7.48	756,550	3.17	$	7.48
$9.27 - $11.35	1,681,475	5.04	10.33		1,592,475	4.85	10.31
$11.87 - $14.62	1,538,700	5.29	13.10		1,433,700	5.11	13.16
$5.07 - $14.62	3,976,725	4.78	10.86		3,782,725	4.61	10.83