Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Stock-Based Compensation

Schedule of the stock option activity

	Options		Weighted-Average  Exercise Price
Outstanding at January 1, 2013	1,432,228		$	10.34
Granted	111,147		$	24.68
Exercised	(299,548	)	$	5.73
Forfeited	(3,391	)	$	20.13
Expired	(1,280	)	$	15.45
Outstanding at September 30, 2013	1,239,156		$	12.71

Schedule of the fair value and assumptions used in determining the fair value of stock options granted

	2013	2012
Risk-free interest rate	1.0%	1.2 - 1.4%
Expected dividend yield	0.0%	0.0%
Weighted average expected volatility	50%	50%
Expected term	6.0 years	6.0 - 6.3 years
Weighted average grant date fair value	$11.74	$8.57

Schedule of restricted stock activity

	Shares		Weighted-Average  Grant Date  Fair Value
Outstanding at January 1, 2013	185,764		$	19.54
Granted	76,590		$	24.48
Vested	(48,513	)	$	19.50
Forfeited	(1,764	)	$	19.80
Outstanding at September 30, 2013	212,077		$	21.33

Schedule of performance awards activity

	Shares	Weighted-Average  Grant Date  Fair Value
Outstanding at January 1, 2013	74,923	$	20.51
Granted	46,106	$	24.68
Outstanding at September 30, 2013	121,029	$	22.10