Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2011

Incentive Plans [Abstract]

Summary of stock option activity and related information

The following is a summary of stock option award activity for 2011:

				Weighted		Weighted
				Average		Average
				Exercise		Remaining		Aggregate
				Price		Contractual		Intrinsic
	Shares			Per Share		Life		Value
	(in thousands)					(in years)		(in thousands)
Outstanding – December 31, 2010		603		$	18.20
Granted		16			30.59
Exercised		(208	)		19.00
Cancelled		(96	)		23.48
Outstanding – December 31, 2011		315			16.67		2.9	$	2,913
Exercisable – December 31,2011		315			16.67		2.9	$	2,913

Summary of restricted stock awards

The following is a summary of restricted stock award activity for 2011:

				Weighted Average
				Grant Date
	Shares			Fair Value
	(in thousands)
Non-vested – December 31, 2010		775		$	19.43
Granted		408			29.47
Vested		(380	)		20.94
Cancelled/Forfeited		(25	)		20.99
Non-vested – December 31, 2011		778			23.91