Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Statements of Cash Flows [Abstract]
Income taxes paid	$ 350		$ 480
Interest expense paid on deposits and borrowings	5,475		5,023
Noncash transfers from loans to other real estate	13,740	[1]	8,886	[1]
Assets acquired in business combination	0		1,851,878
Liabilities assumed in business combination	$ 0		$ 1,821,066

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