Statements of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Statement of cash flows specific transaction amounts [Abstract]
Income taxes paid		$ 778	$ 376
Interest expense paid on deposits and borrowings		7,190	4,986
Noncash transfers from loans to other real estate	[1]	$ 1,766	$ 3,608

[1] Includes transfers from covered loans to covered other real estate.