Stockholder's Equity (Tables)

3 Months Ended

Mar. 31, 2015

Stockholder's Equity

Summary of stock option activity

The following table summarizes stock option activity for the three months ended March 31, 2015 (shares and intrinsic value in thousands):

	Number of shares	Weighted-average exercise price		Weighted-average remaining contractual term	Aggregate intrinsic value
Outstanding at December 31, 2014	1,870	$	11.23	8.4	$	4,721
Granted	65	13.49		6.9	—
Exercised	—	—		—	—
Forfeited	—	—		—	—
Expired	—	—		—	—
Outstanding at March 31, 2015	1,935	$	11.30	8.2	$	3,423
Vested at March 31, 2015	670	$	11.07	7.9	$	1,315
Exercisable at March 31, 2015	670	$	11.07	7.9	$	1,315

Summary of restricted share activity

The following table summarizes restricted share activity for the three months ended March 31, 2015 (shares in thousands):

	Number of shares	Weighted-average grant date fair value
Outstanding at December 31, 2014	719	$	9.82
Granted	—	—
Vested	—	—
Forfeited	—	—
Outstanding at March 31, 2015	719	$	9.82

Time Based Stock Option | Black Scholes Pricing Model

Equity Incentive Plans

Schedule of valuation assumptions

Black-Scholes Option Valuation Assumptions	Three Months Ended March 31, 2015	2014
Risk-free interest rate	1.77%-2.12%	1.76%-1.92%
Dividend yield	—	—
Volatility	27.5%-29.5%	28.4%-30.9%
Weighted-average expected term (years)	6.9	6.0-6.3