Insurance Recoveries (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017
Insurance recoveries gain	$ 1,464,923	$ 495,465
Incurred Damage, Severe Storms [Member]
Insurance recoveries gain	$ 592,000	$ 495,000
Incurred Damage, Severe Storms [Member] | Scenario, Forecast [Member]
Gain on insurance recovery receivable			$ 873,000