Comprehensive Income Statement - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Comprehensive Income Statement
Net earnings	$ 14,112,934	$ 12,188,627
Other comprehensive income:
Unrealized gains on available for sale securities	511,974	1,156,918
Unrealized gains on derivative instruments	3,308	10,639
Other comprehensive income, before income tax	515,282	1,167,557
Income tax expense	(176,934)	(403,377)
Other comprehensive income, net of income tax	338,348	764,180
Comprehensive income	$ 14,451,282	$ 12,952,807