Equity - Incentive (Details)			3 Months Ended		6 Months Ended
	May 23, 2017 USD ($) employee shares	May 19, 2016 USD ($) employee shares	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 USD ($)
Additional information
Compensation expense | $			$ 242,000	$ 539,000	$ 307,000	$ 571,000
Equity Plan | Restricted Stock
Number of Shares
Outstanding at beginning of year (in shares)					100,000
Outstanding at end of year (in shares)			100,000		100,000
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share) | $ / shares					$ 0.63
Outstanding at end of year (in dollars per share) | $ / shares			$ 0.63		$ 0.63
Additional information
Compensation expense | $					$ 15,000
Additional compensation expense expected to be recognized | $			$ 48,000		$ 48,000
Period for future recognition of additional compensation expense					30 months
Equity Plan | Employee Stock Option
Number of Shares
Outstanding at beginning of period (in shares)					95,810
Exercised during period (in shares)					0
Outstanding at end of year (in shares)			95,810		95,810
Exercisable at end of period (in shares)			95,810		95,810
Granted and vested (in shares)			95,810		95,810
Weighted Average Exercise Price Per Share
Outstanding at beginning of year (in dollars per share) | $ / shares					$ 8.02
Exercised during period (in dollars per share) | $ / shares					0.00
Outstanding at end of year (in dollars per share) | $ / shares			$ 8.02		8.02
Exercisable at end of period (in dollars per share) | $ / shares			8.02		8.02
Granted and vested (in dollars per share) | $ / shares			$ 8.02		$ 8.02
Deferred Compensation Plan | Restricted Stock Units (RSUs)
Number of Shares
Outstanding at beginning of year (in shares)					1,607,317
Granted during the year (in shares)					280,000
Outstanding at end of year (in shares)			1,887,317		1,887,317
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year (in dollars per share) | $ / shares					$ 1.28
Granted during the year (in dollars per share) | $ / shares					0.48
Outstanding at end of year (in dollars per share) | $ / shares			$ 1.16		$ 1.16
Additional information
Number of unrestricted shares Director to receive for vested RSU upon termination from board					1
Compensation expense | $					$ 60,000
Additional compensation expense expected to be recognized | $			$ 120,000		$ 120,000
Period for future recognition of additional compensation expense					10 months
KELTIP | KELTIP Units
Number of Shares
Outstanding at end of year (in shares)			1,020,000		1,020,000
Additional information
Additional compensation expense expected to be recognized | $			$ 23,000		$ 23,000
KELTIP | KELTIP Units | Officers
Number of Shares
Outstanding at beginning of year (in shares)					585,000
Granted during the year (in shares)	435,000	585,000
Additional information
Compensation expense | $	$ 200,000	$ 300,000
Weighted Average Exercise Price Per Share
Number of employees | employee	2	2