Condensed Financial Information of Parent Company (Schedule of Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 18,076	$ 15,042
Securities available-for-sale, at fair value	422,665	441,534
Loans, net	762,082	711,362
Payments in excess of funding	206,158	160,777
Premises and equipment, net	20,527	22,031
Other assets	112,715	97,032
Total assets	1,764,243	1,695,176	$ 1,603,209
Liabilities and Shareholders' Equity
Accounts and drafts payable	684,295	694,360
Short-term borrowings	18,000
Other liabilities	60,622	49,042
Total liabilities	1,520,053	1,465,328
Total shareholders' equity	244,190	229,848	$ 225,088	$ 208,035
Total liabilities and shareholders' equity	1,764,243	1,695,176
Parent [Member]
Assets
Cash and due from banks	17,032	35,735
Short-term investments	3,223	35,201
Securities available-for-sale, at fair value	422,665	441,534
Loans, net	45,187	20,188
Payments in excess of funding	206,158	160,777
Investments in subsidiaries	145,400	130,231
Premises and equipment, net	19,940	21,358
Other assets	137,226	117,374
Total assets	996,831	962,398
Liabilities and Shareholders' Equity
Accounts and drafts payable	683,485	693,026
Short-term borrowings	18,000
Other liabilities	50,987	39,362
Total liabilities	752,472	732,388
Total shareholders' equity	244,359	230,010
Total liabilities and shareholders' equity	$ 996,831	$ 962,398