Borrowings Schedule of Other Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	May. 31, 2015	Mar. 31, 2015
Schedule of Other Borrowings [Abstract]
Long-term Federal Home Loan Bank Advances	$ 231,357	$ 181,394		$ 0
nonrevolving line of credit	25,000	25,000		0
Other Securities Sold under Agreements to Repurchase	17,365	17,453		0
Subordinated Debt	0	18,544	$ 18,600	0
Other Borrowings	$ 273,722	$ 242,391		$ 0