Stock Options and Other Equity-Based Incentive Instruments (Tables)

3 Months Ended

Mar. 31, 2013

Stock Options and Other Equity-Based Incentive Instruments [Abstract]

Stock option activity

	Number of Shares			Option Price per Share					Weighted Average Exercise Price		Weighted Average Fair Value on Date of Grant
Outstanding at December 31, 2012		1,393,935		$	12.60	to	$	25.91	$	17.07
Options granted		7,500		$	16.59	to	$	16.59	$	16.59	$	7.51
Options exercised		(20,000	)	$	13.09	to	$	13.09	$	13.09
Options forfeited		—			—	to		—		—
Outstanding at March 31, 2013		1,381,435		$	12.60	to	$	25.91	$	17.13

Summary of options outstanding

	Currently Exercisable		Currently Not Exercisable		Total Outstanding
Number of options		1,047,546		333,889		1,381,435
Weighted average exercise price	$	17.65	$	15.49	$	17.13
Intrinsic value (in thousands)	$	1,379	$	568	$	1,947
Weighted average remaining contractual term (yrs.)		3.7		8.5		4.9