Stock Plans and Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

Summary of Unvested Share Activity

The following table summarizes unvested share activity as of and for the periods indicated for the Stock Incentive Plan:

	Three Months Ended March 31, 2014					Twelve Months Ended December 31, 2013
	Shares			Weighted Average Grant Price		Shares			Weighted Average Grant Price
Outstanding, beginning		787,426		$	1.56		153,316		$	5.92
Granted		54,220			0.96		693,214			1.18
Vested		(10,005	)		12.59		(22,113	)		12.19
Forfeited		(478	)		20.99		(36,991	)		6.22
Outstanding, ending		831,163		$	1.38		787,426		$	1.56

Summary of Unvested Share Activity for Non-Employee Directors

The following table summarizes unvested share activity as of and for the periods indicated for the Non-Employee Directors Stock Ownership Incentive Plan:

	Three Months Ended March 31, 2014				Twelve Months Ended December 31, 2013
	Shares		Weighted Average Grant Price		Shares			Weighted Average Grant Price
Outstanding, beginning		47,428	$	1.69		80,078		$	1.77
Granted		—		—		182,355			0.85
Vested		—		—		(215,005	)		1.01
Forfeited		—		—		—			—
Outstanding, ending		47,428	$	1.69		47,428		$	1.69

Unrecognized Stock Based Compensation Expense Related to Unvested Shares

Unrecognized stock based compensation expense related to unvested shares for the remainder of 2014 and beyond is estimated as follows (in thousands):

April 2014 – December 2014	$	400
2015		411
2016		255
2017		42
2018 & thereafter		—