Loans and Asset Quality Information (Summary of Nonperforming Assets) (Details) - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Nonperforming assets:
Nonaccrual loans		$ 18,267	$ 20,968	$ 23,350
Restructured loans - accruing		16,657	19,834	20,330
Accruing loans > 90 days past due
Total nonperforming loans		34,924	40,802	43,680
Foreclosed real estate		6,140	12,571	9,356
Total nonperforming assets		41,064	53,373	53,036
Purchased credit impaired loans not included above	[1]	$ 20,189	$ 23,165	$ 15,034

[1] In the March 3, 2017 acquisition of Carolina Bank, and the October 1, 2017 acquisition of Asheville Savings Bank, the Company acquired $19.3 million and $9.9 million, respectively, in PCI loans in accordance with ASC 310-30 accounting guidance. These loans are excluded from nonperforming loans, including $0.6 million, $0.6 million, and $0.4 million in PCI loans at September 30, 2018, December 31, 2017, and September 30, 2017, respectively, that were contractually past due 90 days or more.