Stock-based Compensation

6 Months Ended

Jun. 30, 2011

Stock-based Compensation [Abstract]

Stock-based Compensation

Note 7 Stock-based Compensation

Under the Company's 2009 Omnibus Equity Compensation Plan (the "2009 Plan"), as approved by the Company's shareholders to replace the 2004 Equity Compensation Plan (the "2004 Plan"), stock options, stock units, stock awards, stock appreciation rights, dividend equivalents, and other stock-based awards may be granted to employees, non-employee directors, and consultants and advisors. The 2009 Plan authorizes 5,000,000 shares for issuance under the plan. A maximum of 50% of the shares available for issuance under the 2009 Plan may be issued as restricted stock and the maximum number of shares that may be subject to grants under the Plan to any one individual in any one year is 200,000. Awards under the 2009 Plan are made by a committee of the Board of Directors. At June 30, 2011, 4,149,814 shares underlying stock-based compensation awards were still available for grants under the 2009 Plan. No further grants may be made under the 2004 Plan.

Performance Share Units – A performance share unit ("PSU") represents the right to receive a share of the Company's common stock if specified performance goals are met over the three year performance period specified in the grant, subject to certain exceptions through the three year vesting period. Each grantee is granted a target award of PSUs, and may earn between 0% and 200% of the target amount depending on the Company's performance against the performance goals. During the six and three months ended June 30, 2011, the Company recorded stock-based compensation related to PSUs as a component of operations and maintenance expense of $361, and $260, respectively. The following table summarizes nonvested PSU transactions for the six months ended June 30, 2011:

	Number			Weighted
	of			Average
	Share Units			Fair Value
Nonvested share units at beginning of period	-		$	-
Granted	109,375			24.38
Performance criteria adjustment	14,027			24.38
Forfeited	(1,475	)		24.38
Vested	-			-
Share unit awards issued	-			-
Nonvested share units at end of period	121,927		$	24.38

The fair value of PSUs was estimated at the grant date based on the probability of satisfying the performance conditions associated with the PSUs using the Monte Carlo valuation method. The per unit weighted-average fair value at the date of grant for PSUs granted during the six months ended June 30, 2011 was $24.38. The fair value of each PSU grant is amortized into compensation expense on a straight-line basis over their respective vesting periods, which range from 24 to 36 months. The accrual of compensation costs is based on our estimate of the final expected value of the award, and is adjusted as required. The Company assumes that forfeitures will be minimal, and recognizes forfeitures as they occur, which results in a reduction in compensation expense. The recording of compensation expense for PSUs has no impact on net cash flows.

Restricted Stock Units – A restricted stock unit ("RSU") represents the right to receive a share of the Company's common stock. RSUs are eligible to be earned at the end of a specified restricted period, generally three years, beginning on the date of grant. During the six and three months ended June 30, 2011, the Company recorded stock-based compensation related to awards of RSUs as a component of operations and maintenance expense of $141, and $102, respectively. The Company assumes that forfeitures will be minimal, and recognizes forfeitures as they occur, which results in a reduction in compensation expense. The following table summarizes nonvested RSU transactions for the six months ended June 30, 2011:

	Number		Weighted
	of		Average
	Stock Units		Fair Value
Nonvested stock units at beginning of period	-	$	-
Granted	44,342		22.21
Vested	-		-
Forfeited	-		-
Nonvested stock units at end of period	44,342	$	22.21

Stock Options – The fair value of stock options is estimated at the grant date using the Black-Scholes option-pricing model. The following table provides compensation costs for stock-based compensation related to stock options granted in prior periods:

		Six months ended June 30,				Three months ended June 30,
		2011		2010		2011		2010
Stock-based compensation for stock options
within operations and maintenance expenses	$	769	$	1,013	$	329	$	519
Income tax benefit		420		301		46		149

There were no stock options granted during the six months ended June 30, 2011. During the second quarter of 2011, the Company recorded an adjustment related to its historical stock option forfeitures that resulted in a favorable adjustment to compensation expense of $644 and additional income tax expense of $52.

The following table summarizes stock option transactions for the six months ended June 30, 2011:

				Weighted	Weighted
				Average	Average		Aggregate
				Exercise	Remaining		Intrinsic
	Shares			Price	Life (years)		Value
Options:
Outstanding at beginning of period	3,839,197		$	19.54
Granted	-
Forfeited	(12,356	)		18.56
Expired	(10,796	)		23.13
Exercised	(357,703	)		15.56
Outstanding at end of period	3,458,342		$	19.95	5.4	$	10,975
Exercisable at end of period	2,973,498		$	20.28	4.9	$	8,997

Restricted Stock – During the six months ended June 30, 2011 and 2010, the Company recorded stock-based compensation related to restricted stock awards as a component of operations and maintenance expense in the amounts of $1,100 and $1,144, respectively. During the three months ended June 30, 2011 and 2010, the Company recorded stock-based compensation related to restricted stock awards as a component of operations and maintenance expense in the amounts of $711 and $692, respectively. The following table summarizes nonvested restricted stock transactions for the six months ended June 30, 2011:

	Number			Weighted
	of			Average
	Shares			Fair Value
Nonvested shares at beginning of period	233,387		$	17.62
Granted	16,000			22.44
Vested	(85,204	)		18.63
Forfeited	(1,824	)		17.23
Nonvested share units at end of period	162,359		$	17.57