Stockholder's Equity (Tables)

6 Months Ended

Jun. 30, 2015

Equity [Abstract]

Nonvested Stock Activity

The following table represents the nonvested stock activity for the six months ended June 30, 2015:

	Number of Shares		Weighted average grant date fair value
Nonvested shares outstanding as of December 31, 2014	524,287		$	22.56
Granted	191,065		$	33.80
Vested	(166,529	)	$	23.32
Forfeited	(15,880	)	$	22.44
Nonvested shares outstanding as of June 30, 2015	532,943		$	26.35

Shares of Common Stock Issued During 2015 Under Employee Stock Purchase Plan

The table below details the shares of common stock issued during 2015:

	Number of Shares	Per share price
Shares available as of December 31, 2014	236,483
Shares issued during three months ended March 31, 2015	7,068	$	29.62
Shares issued during three months ended June 30, 2015	5,702	$	31.38
Shares available as of June 30, 2015	223,713