Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accrued Liabilities, Current [Abstract]
Deferred compensation	$ 1,710	$ 2,305
Property taxes	1,653	1,073
Meter replacement - related party	17	350
Interest	1,778	478
Dividend payable	514	512
Asset retirement obligation	555	555
Accrued Bonuses, Current	581	325
Other accrued liabilities	1,881	1,867
Total accrued expenses	$ 8,689	$ 7,465