Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2013

Pension Plans

Employee benefit plans

Schedule of components of net periodic benefit cost

	Years ended December 31,
	2013			2012		2011
Service cost	$	4,551		7,431		5,713
Interest cost	5,203			5,729		5,452
Expected return on plan assets	(8,551		)	(7,793	)	(6,009	)
Net amortization and deferral	1,356			2,600		516
Net periodic pension cost	$	2,559		7,967		5,672

Schedule of other changes in the defined benefit pension plans' plan assets and benefit obligations recognized in other comprehensive income

	Years ended December 31,
	2013			2012		2011
Net loss/ (gain)	$	(27,568	)	11,167		29,319
Prior service cost (credit)	(14		)	(26,919	)	—
Amortization of prior service cost	2,321			160		160
Total recognized in other comprehensive income	$	(25,261	)	(15,592	)	29,479
Total recognized in net periodic pension cost and other comprehensive income/ (loss)	$	(22,702	)	(7,625	)	35,151

Schedule of defined benefit pension plans' funded status

	December 31,
	2013			2012
Change in benefit obligation:
Benefit obligation at beginning of year	$	129,802		$	131,927
Service cost	4,551			7,431
Interest cost	5,203			5,729
Amendments (1)	(14		)	(26,919		)
Actuarial (gain)/ loss	(14,422		)	14,527
Benefits paid	(3,353		)	(2,893		)
Benefit obligation at end of year	$	121,767		129,802
Change in plan assets:
Fair value of plan assets at beginning of year	115,489			105,159
Actual return on plan assets	18,020			8,393
Employer contributions	335			4,830
Benefits paid	(3,353		)	(2,893		)
Fair value of plan assets at end of period	$	130,491		115,489
Funded status at end of year	$	8,724		(14,313		)

(1) The Retirement Plan was amended to freeze all benefits earned through March 31, 2013 based on the plan formula using years of service and average monthly compensation as of March 31, 2013.  The amendments also provide that, for service commencing January 1, 2013, benefits will be earned equal to 1% of career average pay for each year that a participant completes at least 1,000 hours of service.  Also, effective April 1, 2013, participants who are eligible to receive required minimum distributions due to attaining age 70 ½ will be required to begin receiving benefits even though they remain employed by us.

Schedule of assumptions used to develop the net periodic pension cost

	Years ended December 31,
	2013		2012		2011
Discount rate	4.06	%	4.39	%	5.57	%
Expected long-term rate of return on assets	7.50	%	7.50	%	7.50	%
Rate of increase in compensation levels	3.00	%	3.00	%	3.00	%

Schedule of assumptions used to determine benefit obligations

	Years ended December 31,
	2013		2012		2011
Discount rate	4.86	%	4.06	%	4.39	%
Expected long-term rate of return on assets	7.50	%	7.50	%	7.50	%
Rate of increase in compensation levels	3.00	%	3.00	%	3.00	%

Schedule of certain information related to pension plans

	December 31,
	2013		2012
Projected benefit obligation	$	121,767	129,802
Accumulated benefit obligation	121,767		129,599
Fair value of plan assets	130,491		115,489

Schedule of weighted average asset allocation of defined benefit plans

	Target	December 31,
	Allocation	2013		2012
Debt securities	20 – 50%	20	%	25	%
Equity securities	30 – 60%	66	%	57	%
Other	5 – 50%	14	%	18	%
Total		100	%	100	%

Schedule of allocation of plan assets

	December 31,
	2013		2012
Mutual funds — debt	$	25,708	29,057
Mutual funds — equity	86,300		65,346
Cash	18,483		21,086

Postretirement Healthcare Plan

Employee benefit plans

Schedule of components of net periodic benefit cost

	Years ended December 31,
	2013		2012	2011
Service cost	$	—	—	—
Interest cost	63		66	86
Amortization of net loss	53		50	52
Net period benefit cost	$	116	116	138

Schedule of other changes in the defined benefit pension plans' plan assets and benefit obligations recognized in other comprehensive income

	Years ended December 31,
	2013			2012	2011
Net loss/ (gain)	$	(136	)	64	(26	)
Total recognized in other comprehensive income	$	(136	)	64	(26	)
Total recognized in net periodic benefit cost and other comprehensive income	$	(20	)	180	112

Schedule of defined benefit pension plans' funded status

	December 31,
	2013			2012
Change in benefit obligation:
Benefit obligation at beginning of year	$	1,620		1,588
Service cost	—			—
Interest cost	63			66
Actuarial (gain)/ loss	(83		)	114
Benefits paid	(175		)	(148	)
Benefit obligation at end of year	$	1,425		1,620
Change in plan assets:
Fair value of plan assets at beginning of year	—			—
Employer contributions	176			148
Benefits paid	(176		)	(148	)
Fair value of plan assets at end of year	$	—		—
Funded status at year end	$	(1,425	)	(1,620	)

Schedule of assumptions used to develop the net periodic pension cost

	Years ended December 31,
	2013			2012		2011
Discount rate	4.06		%	4.39	%	5.57	%
Monthly cost of healthcare insurance per beneficiary (1)	$	351		327		320
Annual rate of increase in healthcare costs	4.00		%	4.00	%	4.00	%

(1) Not in thousands

Schedule of accumulated benefit obligation in excess of plan assets

	December 31,
	2013		2012
Projected benefit obligation	$	1,425	1,620
Accumulated benefit obligation	1,425		1,620
Fair value of plan assets	—		—

Schedule of activity under option plans

The following table summarizes the activity in our option plans during the years ended December 31, 2013, 2012 and 2011 (Amounts in this table are not in thousands):

	Years ended December 31,
	2013				2012				2011
	Number		Weighted average exercise price		Number		Weighted average exercise price		Number		Weighted average exercise price
Balance at beginning of year	7,044,753		$	11.21	6,902,247		$	11.00	4,184,873		$	9.56
Granted (1)	590,300		12.44		573,373		11.70		3,207,191		12.28
Exercised (2)	(727,415	)	10.13		(323,790	)	7.48		(380,778	)	6.06
Forfeited	(91,344	)	11.82		(107,077	)	11.31		(109,039	)	11.21
Balance at end of year	6,816,294		$	11.46	7,044,753		$	11.21	6,902,247		$	11.00
Exercisable at end of year	2,916,621		$	10.97	2,959,834		$	10.61	2,631,198		$	10.11

(1) Weighted average fair value of options at grant date: $1.03, $1.23 and $2.16, respectively.

(2) The total intrinsic value of options exercised was $2.7 million, $1.5 million and $2.3 million, respectively.

Schedule of number of options outstanding, number of options exercisable, and weighted average remaining life of all option grants

	Exercise price $7.48	Exercise price $9.79	Exercise price $9.86	Exercise price $10.19	Exercise price $11.12	Exercise price $11.33	Exercise price $11.49
Options outstanding:
Number of options	391,343	413,379	213,106	338,060	345,618	252,220	482,244
Weighted average remaining contract life (years)	5.25	5.00	2.25	1.25	4.25	1.00	6.25
Options exercisable:
Number of options	183,316	272,905	213,106	338,060	345,618	252,220	174,501
Weighted average remaining term - vested (years)	5.25	5.00	2.25	1.25	4.25	1.00	6.25

	Exercise price $11.51	Exercise price $11.70	Exercise price $12.12	Exercise price $12.17	Exercise price $12.32	Exercise price $12.44	Exercise price $12.48	Total $11.46
Options outstanding:
Number of options	301,077	549,955	524,879	21,500	2,392,863	585,550	4,500	6,816,294
Weighted average remaining contract life (years)	3.25	8.50	7.25	7.50	7.50	9.50	3.50	6.29
Options exercisable:
Number of options	301,077	91,257	114,176	71	571,534	54,280	4,500	2,916,621
Weighted average remaining term - vested (years)	3.25	8.50	7.25	7.50	7.50	9.50	3.50	4.39