Stock Options (Tables)

3 Months Ended

Mar. 31, 2013

Stock Options

Summary of option activity under stock option plans

	Number of options	Weighted average exercise price		Weighted average remaining contractual term (years)	Aggregate intrinsic value ($)
					(Dollars in Thousands)
Options outstanding at December 31, 2012	794,877	$	19.03
Plus: Options granted	—	—
Less:
Options exercised	1,043	11.54
Options expired	22,343	23.50
Options forfeited	14,275	17.15
Options outstanding at March 31, 2013	757,216	18.95		3.63	3,164
Options fully vested and exercisable at March 31, 2013	382,186	23.7		1.64	603