Equity (Details 2) (USD $)	12 Months Ended				0 Months Ended	12 Months Ended			0 Months Ended		12 Months Ended								0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Officers item	Dec. 31, 2013 Equity Plan	Jun. 01, 2013 Equity Plan Officers	Dec. 31, 2013 Equity Plan Restricted stock grants	Dec. 31, 2012 Equity Plan Restricted stock grants	Dec. 31, 2013 Equity Plan Restricted stock grants Officers and employees	Dec. 13, 2013 Equity Plan Restricted stock grants Officers	Jun. 01, 2013 Equity Plan Restricted stock grants Officers	Dec. 31, 2013 Equity Plan Restricted stock grants Officers	Dec. 31, 2013 Equity Plan Restricted stock grants Retired employee	Dec. 31, 2013 Equity Plan Restricted stock grants New employee	Dec. 31, 2013 Equity Plan Stock options	Dec. 31, 2012 Equity Plan Stock options	Dec. 31, 2010 Equity Plan Stock options	Dec. 31, 2013 Deferred Compensation Plan RSUs	Dec. 31, 2012 Deferred Compensation Plan RSUs	Dec. 13, 2013 KELTIP KELTIP Units Officer
Number of Shares
Outstanding at the beginning of year (in shares)						823,500	223,000										143,995	63,781
Granted during the year (in shares)				485,000		637,000	717,500			149,500			2,500				441,290	80,214	172,500
Restrictions lifted during the year (in shares)						(200,029)	(112,000)	187,629				12,400							(75,833)
Forfeited during the year (in shares)						(344,500)	(5,000)
Outstanding at the end of year (in shares)						915,971	823,500										585,285	143,995
Weighted Average Grant Date Fair Value Per Share
Outstanding at the beginning of year (in dollars per share)						$ 5.67	$ 11.54										$ 7.21	$ 11.57
Granted during the year (in dollars per share)						$ 0.76	$ 4.79										$ 1.59	$ 3.74
Restrictions lifted during the year (in dollars per share)						$ 6.54	$ 11.67
Forfeited during the year (in dollars per share)						$ 4.60	$ 6.19
Outstanding at the end of year (in dollars per share)						$ 2.47	$ 5.67										$ 2.97	$ 7.21
Additional information
Percentage of annual salary reduction					10.00%
Period for which annual salary reduction will be effective					1 year
Percentage of awards which will vest on each of the first, second and third anniversaries of the grant date				33.00%		33.00%
Unvested shares forfeited due to resignation of employees											199,500
Number of employees resigned			2
Unvested awards surrendered (in shares)									145,000
Share limit on grants to any one individual in one calendar year				150,000
Vested awards surrendered (in shares)									27,500
Compensation expense	$ 1,555,000	$ 2,588,000				$ 1,000,000	$ 2,400,000										$ 600,000	$ 200,000
Additional compensation expense expected to be recognized						$ 700,000											$ 200,000
Period for recognition of additional compensation expense						36 months											6 months
Vesting, from date of grant										1 year
Number of unrestricted common shares that the Director is entitled to receive for each vested RSU, upon termination from board service																	1
Number of Shares
Outstanding at beginning of year (in shares)														118,810	136,810
Forfeited during the year (in shares)														(8,000)	(18,000)
Outstanding at end of year (in shares)														110,810	118,810
Exercisable at end of period (in shares)														110,810	118,810
Granted and vested (in shares)														110,810	118,810
Weighted Average Exercise Price Per Share
Outstanding at beginning of year (in dollars per share)														$ 8.01	$ 8.01
Forfeited or expired during year (in dollars per shares)														$ 8.01	$ 8.01
Outstanding at the end of year (in dollars per share)														$ 8.01	$ 8.01
Exercisable at end of period (in dollars per share)														$ 8.01	$ 8.01
Granted and vested (in dollars per share)														$ 8.01	$ 8.01
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%