Equity - Incentive (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) employee $ / shares shares	Dec. 31, 2015 USD ($) employee item $ / shares shares
Additional information
Compensation expense | $	$ 593,000	$ 453,000
Equity Plan | Restricted Stock
Number of Shares
Outstanding at beginning of year (in shares)	84,170	600,838
Granted during the year (in shares)	100,000	0
Restrictions lifted during the year (in shares)	(84,170)	(516,668)
Outstanding at end of year (in shares)	100,000	84,170
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 0.46	$ 1.48
Granted during the year (in dollars per share) | $ / shares	0.63
Restrictions lifted during the year (in dollars per share) | $ / shares	0.46	1.64
Outstanding at end of year (in dollars per share) | $ / shares	$ 0.63	$ 0.46
Additional information
Number of employees | employee	3
Compensation expense | $		$ 200,000
Additional compensation expense expected to be recognized | $	$ 62,000
Period for future recognition of additional compensation expense	36 months
Equity Plan | Restricted Stock | Officers
Number of Shares
Restrictions lifted during the year (in shares)	(84,170)	(163,334)
Additional information
Number of employees | employee	2
Number of employees resigned | item		2
Equity Plan | Restricted Stock | Officers and Employees
Number of Shares
Restrictions lifted during the year (in shares)		(336,334)
Equity Plan | Restricted Stock | Terminated Employees
Number of Shares
Restrictions lifted during the year (in shares)		(12,000)
Additional information
Number of employees terminated | employee		2
Equity Plan | Employee Stock Option
Number of Shares
Outstanding at beginning of period (in shares)	245,810	245,810
Granted during period (in shares)	0	0
Forfeited or expired during period (in shares)	(150,000)
Outstanding at end of year (in shares)	95,810	245,810
Exercisable at end of period (in shares)	95,810	245,810
Granted and vested (in shares)	95,810	245,810
Weighted Average Exercise Price Per Share
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 3.47	$ 3.47
Granted during period (in dollars per share) | $ / shares	0.00	0.00
Forfeited or expired during year (in dollars per share) | $ / shares	0.56
Outstanding at end of year (in dollars per share) | $ / shares	8.02	3.47
Exercisable at end of period (in dollars per share) | $ / shares	8.02	3.47
Granted and vested (in dollars per share) | $ / shares	8.02	3.47
Granted during period (in dollars per share) | $ / shares	$ 0.00	$ 0.00
Equity Plan | Employee Stock Option | Maximum
Additional information
Compensation expense | $		$ 100,000
Equity Plan | KELTIP Units | Retired Employee
Additional information
Number of shares issued upon retirement of an officer		172,500
Deferred Compensation Plan | Restricted Stock Units (RSUs)
Number of Shares
Outstanding at beginning of year (in shares)	1,245,285	935,285
Granted during the year (in shares)	530,000	310,000
Restrictions lifted during the year (in shares)	(167,968)
Outstanding at end of year (in shares)	1,607,317	1,245,285
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 1.66	$ 2.97
Granted during the year (in dollars per share) | $ / shares	0.42	0.39
Restrictions lifted during the year (in dollars per share) | $ / shares	1.40
Outstanding at end of year (in dollars per share) | $ / shares	$ 1.28	$ 1.66
Additional information
Compensation expense | $	$ 200,000	$ 200,000
Period for future recognition of additional compensation expense	6 months
Weighted Average Exercise Price Per Share
Number of unrestricted shares Director to receive for vested RSU upon termination from board	1
Deferred Compensation Plan | Restricted Stock Units (RSUs) | Maximum
Additional information
Additional compensation expense expected to be recognized | $	$ 100,000
KELTIP | KELTIP Units
Number of Shares
Outstanding at beginning of year (in shares)	0
Outstanding at end of year (in shares)	585,000	0
Additional information
Compensation expense | $	$ 100,000
KELTIP | KELTIP Units | Officers
Number of Shares
Granted during the year (in shares)	585,000
Additional information
Number of employees | employee	2
Compensation expense | $	$ 200,000