Acquisitions, (Details) - USD ($)			3 Months Ended		6 Months Ended
	Mar. 01, 2016	Sep. 01, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Feb. 01, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets			$ 846,615	$ 227,413	$ 1,719,830	$ 454,827
Bankers Healthcare Group, LLC [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired intangible assets			575,000	$ 600,000	953,000	$ 1,000,000
Face amount			$ 0		$ 0		$ 2,200,000
Noncontrolling Interest, Ownership Percentage by Parent	8.55%		49.00%		49.00%			30.00%
Purchase Price of Acquired Entity	$ 11,400,000		$ 74,100,000		$ 74,100,000			$ 75,000,000
Additional ownership percentage	19.00%
Common stock issued in the purchase agreement (in shares)	860,470
Bankers Healthcare Group, LLC [Member] | Pinnacle Bank [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase Price of Acquired Entity	$ 62,700,000
Additional ownership percentage	10.45%
CapitalMark [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Additional adjustments to goodwill					400,000
Reduction in loan fair value					206,000
Increase in deferred tax asset recognized on the fair value adjustment			$ 6,300,000		$ 6,300,000
Magna [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Reduction in loan fair value		$ 426,000
Increase in deferred tax asset recognized on the fair value adjustment		$ 1,900,000