Stock-Based Compensation (Details 1) (USD $)	3 Months Ended
	Mar. 31, 2014 Director group [Member]	Mar. 31, 2014 Employee [Member]	Mar. 31, 2013 2008 Equity Incentive Plan [Member] Director group [Member]	Mar. 31, 2013 2008 Equity Incentive Plan [Member] Director Group 1 [Member]	Mar. 31, 2013 2008 Equity Incentive Plan [Member] Employee [Member]	Mar. 31, 2013 2008 Equity Incentive Plan [Member] Employee inducement (1) [Member]		Mar. 31, 2014 Restricted Stock and Restricted Stock Units [Member]	Mar. 31, 2013 Restricted Stock and Restricted Stock Units [Member] 2008 Equity Incentive Plan [Member] Director group [Member]	Mar. 31, 2013 Restricted Stock and Restricted Stock Units [Member] 2008 Equity Incentive Plan [Member] Director Group 1 [Member]	Mar. 31, 2013 Restricted Stock and Restricted Stock Units [Member] 2008 Equity Incentive Plan [Member] Employee [Member]	Mar. 31, 2013 Restricted Stock and Restricted Stock Units [Member] 2008 Equity Incentive Plan [Member] Employee inducement (1) [Member]
Summary of nonvested stock awards granted
Grantee Type									Director group	Director group	Employee group	Employee inducement (1)
No. of Shares Granted (shares)								0	7,122	17,092	5,000	20,000
Vesting Period			1 year or less						1 year or less
Vesting Period	1 year	3 years		3 years	3 years	3 years	[1]			3 years	3 years	3 years
Weighted Average Grant Date Fair Value (usd per share)			$ 2.35	$ 3.76	$ 3.65	$ 3.81	[1]		$ 6.83	$ 6.83	$ 6.83	$ 7.14

[1] (1)The Company granted nonvested performance-based stock awards (restricted stock) outside its existing stock-based compensation plans in the first quarter of 2013 to one employee in connection with the employee joining the Company.