Acquisition Activity - Pro Forma Information (Details) - Sabadell United - USD ($)	2 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Net interest income	$ 20,611	$ 232,828	$ 210,736	$ 688,846	$ 632,209
Non-interest income	1,018	54,511	63,756	164,360	191,267
Net income	$ 13,207	$ 30,663	$ 61,144	$ 162,850	$ 183,433