Equity - (Incentive) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Additional information
Compensation expense	$ 32,000	$ 179,000
KELTIP Units
Number of Shares
Outstanding at beginning of year (in shares)	0
Outstanding at end of year (in shares)	0
Equity Plan | Restricted Stock
Number of Shares
Outstanding at beginning of year (in shares)	84,170
Restrictions lifted during the year (in shares)	(834)
Outstanding at end of year (in shares)	83,336
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share)	$ 0.46
Restrictions lifted during the year (in dollars per share)	2.89
Outstanding at end of year (in dollars per share)	$ 0.44
Additional information
Compensation expense	$ 2,000,000,000
Additional compensation expense expected to be recognized	$ 5,000,000,000
Period for future recognition of additional compensation expense	9 months
Equity Plan | Employee and Directors Stock Options
Number of Shares
Outstanding at beginning of period (in shares)	245,810
Exercised during period (in shares)	0
Outstanding at end of year (in shares)	245,810
Exercisable at end of period (in shares)	245,810
Granted and vested (in shares)	245,810
Weighted Average Exercise Price Per Share
Outstanding at beginning of year (in dollars per share)	$ 3.47
Exercised during period (in dollars per share)	0.00
Outstanding at end of year (in dollars per share)	3.47
Exercisable at end of period (in dollars per share)	3.47
Granted and vested (in dollars per share)	$ 3.47
Deferred Compensation Plan | Restricted Stock Units (RSUs)
Number of Shares
Outstanding at beginning of year (in shares)	1,245,285
Outstanding at end of year (in shares)	1,245,285
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share)	$ 1.66
Outstanding at end of year (in dollars per share)	$ 1.66
Additional information
Compensation expense	$ 31,000
Additional compensation expense expected to be recognized	$ 10,000
Period for future recognition of additional compensation expense	3 months
Weighted Average Exercise Price Per Share
Number of unrestricted common shares that the Director is entitled to receive for each vested RSU, upon termination from board service	1