Business Combination and Goodwill (Assets Acquired and Liabilities Assumed Recognized at the Acquisition Date) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Jan. 01, 2018
Recognized amounts of identifiable assets acquired and liabilities assumed
Goodwill resulting from acquisition	$ 10,708
County First Bank Acquisition [Member]
Consideration Paid
Cash	2,122
Common shares issued	35,620
Fair value of total consideration transferred	37,742
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents	34,409
Securities	38,242
Loans, net of allowance	140,750
Premises and equipment	3,161
Core deposit intangibles	3,590
Interest receivable	501
Bank owned life insurance	6,275
Deferred tax asset	300
Other assets	586
Total assets acquired	227,814
Deposits	199,228
Other liabilities	1,552
Total liabilities assumed	200,780
Net identifiable assets acquired	27,034
Goodwill resulting from acquisition	$ 10,708	$ 10,300
County First Bank Acquisition [Member] | Fair Value And Other Merger Related Adjustments [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed
Securities		(619)
Loans, net of allowance		(1,654)
Premises and equipment		181
Core deposit intangibles		3,590
Interest receivable		(12)
Deferred tax asset		(339)
Total assets acquired		1,147
Deposits		18
Other liabilities		103
Total liabilities assumed		121
Net identifiable assets acquired		1,026
County First Bank Acquisition [Member] | County First Bank [Member]
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash and cash equivalents		34,409
Securities		38,861
Loans, net of allowance		142,404
Premises and equipment		2,980
Interest receivable		513
Bank owned life insurance		6,275
Deferred tax asset		639
Other assets		586
Total assets acquired		226,667
Deposits		199,210
Other liabilities		1,449
Total liabilities assumed		200,659
Net identifiable assets acquired		$ 26,008