Stock Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of restricted common stock and performance based restricted stock unit in stock incentive plans

The following table summarizes restricted common stock and performance-based restricted stock unit activity in our stock incentive plans for the six months ended June 30, 2015.

	Restricted Common Stock							Restricted Stock Units
	Number of Shares			Weighted Average Grant Date Fair Value				Number of Units			Weighted Average Grant Date Fair Value
Unvested at January 1, 2015		752,701			$	11.90			776,500			$	10.66
Granted		426,552			13.04				409,800			12.64
Vested		(4,000	)		(8.95		)		—			—
Forfeited		(50,294	)		(11.59		)		(46,900	)		(10.92		)
Unvested at June 30, 2015		1,124,959			12.36				1,139,400			11.36