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Pension Plans and Other Postretirement Benefits (Tables)

12 Months Ended

Dec. 31, 2012

Defined Benefit Plan Disclosure [Line Items]

Summary of contributions to qualified defined contribution plan, 401(k), non-qualified defined contribution plan and total assets of the plans

		Year Ended December 31,
		2012				2011				2010
Qualified defined contribution plan:
Contributions to employees’ accounts		$	4,148			$	4,864			$	5,252
Total assets at the end of the year			141,286				149,675				148,897
401(k) plan:
Contributions to employees’ accounts			2,753				2,856				3,011
Total assets at the end of the year			118,073				111,370				117,814
Non-qualified defined contribution plan:
Contributions to employees’ accounts			-				-				-
Total assets at the end of the year			-				-				-

Defined benefit plan and the supplemental defined benefit plans

														Supplemental
		Defined Benefit Plan												Defined Benefit Plans
		Year Ended December 31,												Year Ended December 31,
		2012				2011				2010				2012				2011				2010
Components of net periodic pension (income) expense:
Service cost:
Benefit accrual		$	-			$	-			$	-			$	-			$	-			$	-
Other expenses			360				250				250				-				-				-
Interest cost			1,427				1,658				1,877				676				799				841
Expected return on plan assets			(2,423	)			(2,419	)			(2,388	)			-				-				-
Settlement loss			1,209				1,290				-				-				-				-
Amortization of:
Prior service cost			-				-				-				124				125				124
Actuarial loss			2,367				1,824				1,045				171				698				246
Net periodic pension expense		$	2,940			$	2,603			$	784			$	971			$	1,622			$	1,211
Changes in plan assets and benefit obligations included in other comprehensive income (loss):
Prior service cost		$	-			$	-			$	-			$	-			$	-			$	-
Net actuarial loss			115				4,951				2,365				817				1,755				1,401
Amortization of:
Prior service cost			-				-				-				(124	)			(125	)			(124	)
Actuarial loss			(2,367	)			(1,824	)			(1,045	)			(171	)			(698	)			(246	)
Total recognized in other comprehensive income (loss)		$	(2,252	)		$	3,127			$	1,320			$	522			$	932			$	1,031
Weighted-average assumptions used to determine expense:
Discount rate			3.66	%			4.58	%			5.27	%			3.86	%			4.92	%			5.54	%
Expected return on plan assets			7.50	%			7.50	%			7.50	%			*				*				*
Annual rate of salary increase			*				*				*				*				*				*
Weighted-average assumptions used to determine benefit obligations as of December 31:
Discount rate			3.51	%			3.66	%			4.58	%			3.51	%			3.86	%			4.92	%
Expected return on plan assets			7.50	%			7.50	%			7.50	%			*				*				*
Annual rate of salary increase			*				*				*				*				*				*

* Not applicable.

Fair value hierarchy for the Company's defined benefit pension plan assets

							Fair Value Measurements at
							Reporting Date Using
		Total					Level 1					Level 2					Level 3
December 31, 2012
Asset category
Equity security funds (1)
United States			$	13,199				$	-				$	13,199				$	-
International				3,290					-					3,290					-
Fixed income funds				16,125					-					16,125					-
Total			$	32,614				$	-				$	32,614				$	-
December 31, 2011
Asset category
Equity security funds (1)
United States			$	12,784				$	-				$	12,784				$	-
International				2,968					-					2,968					-
Fixed income funds				15,756					-					15,756					-
Total			$	31,508				$	-				$	31,508				$	-

(1) None of the trust fund assets for the defined benefit pension plan have been invested in shares of HMEC’s common stock.

Net periodic benefit for postretirement benefits other than pensions

		Year Ended December 31,
		2012				2011				2010
Components of net periodic benefit:
Service cost		$	-			$	-			$	-
Interest cost			91				122				170
Amortization of prior service cost			-				-				-
Amortization of prior gain			(522	)			(501	)			(520	)
Net periodic income		$	(431	)		$	(379	)		$	(350	)

Summary of change in accumulated postretirement benefit obligations

		December 31,
		2012				2011				2010
Accumulated postretirement benefit obligations
Effect of a one percentage point increase		$	45			$	53			$	59
Effect of a one percentage point decrease			(43	)			(50	)			(56	)
Service and interest cost components of the net periodic postretirement benefit expense
Effect of a one percentage point increase		$	1			$	2			$	2
Effect of a one percentage point decrease			(1	)			(1	)			(2	)
Weighted-average assumptions used to determine benefit obligations as of December 31:
Discount rate			3.51	%			2.95	%			3.68	%
Healthcare cost trend rate			7.50	%			8.00	%			8.00	%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)			5.00	%			5.00	%			5.00	%
Year the rate is assumed to reach the ultimate trend rate			2022				2022				2021
Expected return on plan assets			*				*				*
Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:
Discount rate			2.95	%			3.68	%			4.49	%
Healthcare cost trend rate			8.00	%			8.00	%			8.50	%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate)			5.00	%			5.00	%			5.00	%
Year the rate is assumed to reach the ultimate trend rate			2022				2021				2017
Expected return on plan assets			*				*				*

* Not applicable.

Summary of minimum funding requirement and the expected full year contributions for the Company's plans

Defined Benefit Pension Plans

Defined

Supplemental

Other

Benefit

Defined Benefit

Postretirement

Plan

Plans

Benefits

Minimum funding requirement for 2013

$

-

N/A

N/A

Expected contributions (approximations) for the year ended December 31, 2013 as of the time of this Form 10-K (1)

$

2,500

$

1,320

$

480

N/A - Not applicable.

(1) HMEC’s Annual Report on Form 10-K for the year ended December 31, 2012.

Estimated future benefit payments

		2013				2014				2015				2016				2017				2018-2022
Pension plans:
Defined benefit plan		$	3,971			$	3,850			$	3,539			$	3,234			$	2,803			$	13,432
Supplemental retirement plans			1,320				1,310				1,300				1,291				1,276				6,071
Other postretirement benefits			480				434				427				368				369				892

Postretirement Benefit Costs [Member]

Defined Benefit Plan Disclosure [Line Items]

Funded status of the defined benefit, supplemental retirement pension plans and postretirement benefits other than pensions

		December 31,
		2012				2011				2010
Change in accumulated postretirement benefit obligations:
Accumulated postretirement benefit obligations at beginning of year		$	3,326			$	3,489			$	4,470
Changes during fiscal year
Service cost			-				-				-
Interest cost			91				122				170
Medicare prescription reimbursements			-				-				-
Employer payments net of participant contributions			(488	)			(526	)			(744	)
Actuarial (gain) loss			(67	)			241				(407	)
Accumulated postretirement benefit obligations at end of year		$	2,862			$	3,326			$	3,489
Unfunded status		$	(2,862	)		$	(3,326	)		$	(3,489	)
Total amount recognized in Consolidated Balance Sheets, all in other liabilities		$	(2,862	)		$	(3,326	)		$	(3,489	)
Amounts recognized in accumulated other comprehensive income (loss) (“AOCI”):
Prior service credit		$	-			$	-			$	-
Net actuarial gain			(900	)			(1,355	)			(2,097	)
Total amount recognized in AOCI		$	(900	)		$	(1,355	)		$	(2,097	)

Defined Benefit Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Funded status of the defined benefit, supplemental retirement pension plans and postretirement benefits other than pensions

														Supplemental
		Defined Benefit Plan												Defined Benefit Plans
		December 31,												December 31,
		2012				2011				2010				2012				2011				2010
Change in benefit obligation:
Projected benefit obligation at beginning of year		$	41,736			$	39,553			$	38,488			$	18,012			$	16,801			$	15,707
Service cost			-				-				-				-				-				-
Interest cost			1,427				1,658				1,877				676				799				841
Plan amendments			-				-				-				-				-				-
Actuarial loss			2,046				4,650				2,817				817				1,755				1,401
Benefits paid			(1,664	)			(1,664	)			(3,629	)			(1,313	)			(1,343	)			(1,148	)
Settlements			(2,551	)			(2,461	)			-				-				-				-
Projected benefit obligation at end of year		$	40,994			$	41,736			$	39,553			$	18,192			$	18,012			$	16,801
Change in plan assets:
Fair value of plan assets at beginning of year		$	31,653			$	29,273			$	29,006			$	-			$	-			$	-
Actual return on plan assets			3,168				911				2,812				-				-				-
Employer contributions			2,534				5,926				1,307				1,313				1,343				1,148
Benefits paid			(1,664	)			(1,664	)			(3,629	)			(1,313	)			(1,343	)			(1,148	)
Expenses paid			(383	)			(332	)			(223	)			-				-				-
Settlements			(2,551	)			(2,461	)			-				-				-				-
Fair value of plan assets at end of year		$	32,757			$	31,653			$	29,273			$	-			$	-			$	-
Funded status		$	(8,237	)		$	(10,083	)		$	(10,280	)		$	(18,192	)		$	(18,012	)		$	(16,801	)
Prepaid (accrued) benefit expense		$	11,188			$	11,594			$	8,270			$	(12,855	)		$	(13,197	)		$	(12,918	)
Total amount recognized in Consolidated Balance Sheets, all in other liabilities		$	(8,237	)		$	(10,083	)		$	(10,280	)		$	(18,192	)		$	(18,012	)		$	(16,801	)
Amounts recognized in accumulated other comprehensive income (loss) (“AOCI”):
Prior service cost		$	-			$	-			$	-			$	124			$	249			$	373
Net actuarial loss			19,425				21,677				18,550				5,213				4,566				3,510
Total amount recognized in AOCI		$	19,425			$	21,677			$	18,550			$	5,337			$	4,815			$	3,883
Information for pension plans with an accumulated benefit obligation greater than plan assets:
Projected benefit obligation		$	40,994			$	41,736			$	39,553			$	18,192			$	18,012			$	16,801
Accumulated benefit obligation			40,994				41,736				39,553				18,192				18,012				16,801
Fair value of plan assets			32,757				31,653				29,273				-				-				-

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Tabular disclosure of contributions to employees' accounts under the qualified defined contribution plan, the 401(k) plan and the non-qualified defined contribution plan, as well as total assets of the plans.

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