Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2012

Summary of Significant Accounting Policies [Abstract]

Stock option activity and stock options outstanding

	Shares			Exercise Price*		Remaining Contractual Life (in years)*		Intrinsic Value of Unexercised In-The Money Options (in 000's)
Options outstanding at January 1, 2012		325,067		$	36.68		3.0
Exercised		(22,167	)		22.60
Options outstanding and exercisable at June 30, 2012		302,900		$	37.71		2.6	$	460

* Weighted average

Activity for restricted stock awards

	Shares			Weighted- Average Grant Date Fair Value
Unvested, January 1, 2012		87,125		$	22.59
Granted		11,775		$	29.81
Vested		(3,650	)	$	19.82
Cancelled		(950	)	$	22.26
Unvested, June 30, 2012		94,300		$	23.60