Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2011

Schedule Of Income Statement Recognition Of Share-Based Compensation

	2011		2010		2009
Cost of revenue	$	592	$	418	$	451
Selling, general and administrative		7,057		5,767		9,438
Research and development		371		293		142
Total share-based compensation	$	8,020	$	6,478	$	10,031

Schedule Of Assumptions For Stock Options Granted

Assumptions for Stock Options Granted	2011	2010	2009
Expected volatility	39.64 - 41.09%	35.56 - 39.89%	31.88 - 35.31%
Expected dividends	0.90- 1.19%	1.50- 1.80%	1.91- 2.95%
Expected term (in years)	5.66- 5.89	4.50- 6.50	5.75- 6.25
Risk-free rate	1.24- 2.76%	1.73- 3.29%	2.13- 2.94%
Weighted-average volatility	40.45%	37.76%	33.96%
Weighted-average dividends	1.04%	1.75%	2.22%
Weighted-average term (in years)	5.86	5.43	5.96
Weighted-average risk-free rate	1.97%	2.45%	2.47%
Weighted-average grant date fair value	$14.55	$7.33	$5.31

Schedule Of Summary Of Option Activity Under The SIPs

Options	Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value (In thousands)
Outstanding at December 31, 2010		2,020,767		$	32.17
Granted		154,226			39.21
Exercised		(115,788	)		20.18
Forfeited or expired		(15,431	)		30.95
Outstanding at December 31, 2011		2,043,774		$	33.39		5.62	$	10,537
Vested or expected to vest at December 31, 2011		2,009,984		$	33.49		5.57	$	10,240
Exercisable at December 31, 2011		1,549,376		$	35.69		4.77	$	5,681

Schedule Of Information Related To Options Exercised

	2011		2010		2009
	(In thousands)
Intrinsic value of stock options exercised	$	2,269	$	3,725	$	3
Cash received from stock options exercised	$	2,336	$	6,076	$	68

Schedule Of Employee Stock Purchase Plan Information

	2011		2010		2009
Number of ESPP shares issued		42,443		56,279		102,081
Amount of proceeds received from employees	$	1,288	$	1,207	$	1,233
Share-based compensation expense	$	352	$	332	$	385

Nonvested Deferred Stock Units [Member]

Schedule Of Nonvested Deferred Stock Units

Nonvested Board DSUs	Shares			Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2010		32,961		$	28.43
Granted		30,397			39.89
Vested		(17,212	)		31.46
Nonvested at December 31, 2011		46,146		$	34.85
Vested at December 31, 2011		65,433		$	30.15
Expected to vest at December 31, 2011		43,262		$	34.85

Service Award Units [Member]

Schedule Of Service Award Units

Service Award Units	Shares			Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2010		169,203		$	21.07
Granted		18,434			42.72
Vested		(58,819	)		26.99
Cancellations		(1,581	)		22.46
Nonvested at December 31, 2011		127,237		$	21.45
Expected to vest at December 31, 2011		119,577		$	21.45

Performance Award Units [Member]

Schedule Of Performance Award Units

Performance Award Units	Shares			Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2010		78,974		$	26.33
Granted		52,503			42.77
Vested		(19,765	)		26.33
Cancellations		(2,191	)		35.93
Nonvested at December 31, 2011		109,521		$	34.29
Expected to vest at December 31, 2011		102,928		$	34.29

Chief Executive Officer [Member] | DSU Service Award [Member]

Schedule Of Performance Award Units

Service DSU Units Granted to CEO	Shares			Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2010		60,144		$	24.94
Granted		900			44.44
Vested		(15,936	)		26.04
Total at December 31, 2011		45,108		$	24.94
Expected to vest at December 31, 2011		45,108		$	24.94

Chief Executive Officer [Member] | DSU Performance Award [Member]

Schedule Of Performance Award Units

Performance DSUs Granted to CEO	Shares			Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2010		23,004		$	22.17
Granted		24,122			44.44
Vested		(5,751	)		22.17
Total at December 31, 2011		41,375		$	35.15
Expected to vest at December 31, 2011		41,375		$	35.15