Equity (Details 2) (USD $)	12 Months Ended		0 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Jun. 01, 2013	Dec. 13, 2013	Dec. 31, 2010
Additional information
Compensation expense	$ 926,000	$ 1,555,000
Equity Plan
Additional information
Share limit on grants to any one individual in one calendar year		150,000
Equity Plan | Officers
Additional information
Percentage of annual salary reduction			10.00%
Period for which annual salary reduction will be effective			1 year
Equity Plan | Restricted Stock
Number of Shares
Outstanding at beginning of year (in shares)	915,971	823,500
Granted during year (in shares)	140,000	637,000
Restrictions lifted during the year (in shares)	(455,133)	(200,029)
Forfeited during the period (in shares)		(344,500)
Outstanding at end of year (in shares)	600,838	915,971
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share)	$ 2.47	$ 5.67
Granted during the year (in dollars per share)	$ 0.52	$ 0.76
Restrictions lifted during the year (in dollars per share)	$ 3.18	$ 6.54
Forfeited during the year (in dollars per share)		$ 4.60
Outstanding at end of year (in dollars per share)	$ 1.48	$ 2.47
Additional information
Compensation expense	500,000	1,000,000
Additional compensation expense expected to be recognized	200,000
Period for recognition of additional compensation expense	35 months
Equity Plan | Restricted Stock | Officers and Employees
Number of Shares
Restrictions lifted during the year (in shares)	(444,633)	(187,629)
Equity Plan | Restricted Stock | Terminated Employees
Number of Shares
Restrictions lifted during the year (in shares)	(10,500)
Additional information
Number of Employees Terminated	2
Equity Plan | Restricted Stock | Officers
Number of Shares
Granted during year (in shares)			149,500
Additional information
Unvested shares forfeited due to resignation of employees		199,500
Number of employees resigned		2
Unvested awards surrendered (in shares)				145,000
Vested awards surrendered (in shares)				27,500
Vesting, from date of grant			1 year
Equity Plan | Restricted Stock | Retired Employee
Number of Shares
Restrictions lifted during the year (in shares)		(12,400)
Equity Plan | Restricted Stock | New Employee
Number of Shares
Granted during year (in shares)		2,500
Equity Plan | Employee Stock Option
Number of Shares
Outstanding at beginning of period (in shares)	110,810	118,810
Forfeited or expired during period (in shares)	(15,000)	(8,000)
Outstanding at end of year (in shares)	95,810	110,810
Exercisable at end of period (in shares)	95,810	110,810
Granted and vested (in shares)	95,810	110,810
Weighted Average Exercise Price Per Share
Outstanding at beginning of year (in dollars per share)	$ 8.02	$ 8.02
Forfeited or expired during year (in dollars per shares)	$ 8.00	$ 8.00
Outstanding at end of year (in dollars per share)	$ 8.02	$ 8.02
Exercisable at end of period (in dollars per share)	$ 8.02	$ 8.02
Granted and vested (in dollars per share)	$ 8.02	$ 8.02
Assumptions noted by using the Black-Scholes option pricing model for estimating fair value of each option award
Expected volatility (as a percent)					73.20%
Weighted average volatility (as a percent)					73.20%
Expected term					5 years
Risk-free rate (as a percent)					1.50%
Equity Plan | Restricted Stock Units (RSUs) | Officers
Number of Shares
Granted during year (in shares)		485,000
Additional information
Percentage of awards which will vest on each of the first, second and third anniversaries of the grant date		33.00%
Equity Plan | Restricted Stock Units (RSUs) | New Employee
Additional information
Percentage of awards which will vest on each of the first, second and third anniversaries of the grant date		33.00%
Deferred Compensation Plan | Restricted Stock Units (RSUs)
Number of Shares
Outstanding at beginning of year (in shares)	585,285	143,995
Granted during year (in shares)	350,000	441,290
Outstanding at end of year (in shares)	935,285	585,285
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share)	$ 2.97	$ 7.21
Granted during the year (in dollars per share)	$ 0.58	$ 1.59
Outstanding at end of year (in dollars per share)	$ 2.08	$ 2.97
Additional information
Compensation expense	400,000	600,000
Additional compensation expense expected to be recognized	$ 100,000
Period for recognition of additional compensation expense	6 months
Number of unrestricted common shares that the Director is entitled to receive for each vested RSU, upon termination from board service	1
KELTIP | KELTIP Units | Officer
Number of Shares
Granted during year (in shares)		172,500