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Consolidated Statements of Comprehensive Income (FY) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 5,015,064	$ 5,798,808
Other comprehensive loss, net of tax:
Unrealized holding gains (losses) arising during the year, net of tax expense (benefit) of $55,405 and $(326,697) in 2017 and 2016, respectively	90,381	(526,954)
Reclassification adjustment for gains included in net income, net of tax expense of $54,533 and $76,422 in 2017 and 2016, respectively	(88,975)	(123,165)
Total other comprehensive (loss) income	1,406	(650,119)
Effect of tax rate change on unrealized gains (losses) on available for sale securities	(197,215)	0
Total other comprehensive loss	(195,809)	(650,119)
Comprehensive income	$ 4,819,255	$ 5,148,689

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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