Fair Value Accounting (Schedule of Estimated Fair Values of the Company's Financial Instruments) (Details) - USD ($) $ in Thousands		Sep. 30, 2019	Dec. 31, 2018
Financial Assets:
Other investments, at cost, Carrying Amount		$ 3,307	$ 4,121
Loans, Carrying Amount	[1]	1,809,760	1,648,998
Other investments, at cost, Fair Value		3,307	4,121
Loans, Fair Value	[1]	1,787,368	1,618,618
Financial Liabilities:
Deposits, Carrying Amount		1,899,295	1,648,136
FHLB and other borrowings, Carrying Amount		25,000	50,000
Junior subordinated debentures, Carrying Amount		35,887	13,403
Deposits, Fair Value		1,809,500	1,515,123
FHLB and other borrowings, Fair Value		26,166	50,147
Junior subordinated debentures, Fair Value		33,567	14,807
Estimate Of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Other investments, at cost, Fair Value
Loans, Fair Value	[1]
Financial Liabilities:
Deposits, Fair Value
FHLB and other borrowings, Fair Value
Junior subordinated debentures, Fair Value
Estimate Of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Other investments, at cost, Fair Value
Loans, Fair Value	[1]
Financial Liabilities:
Deposits, Fair Value		1,809,500	1,515,123
FHLB and other borrowings, Fair Value		26,166	50,147
Junior subordinated debentures, Fair Value		33,567	14,807
Estimate Of Fair Value, Fair Value Disclosure [Member] | Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Other investments, at cost, Fair Value		3,307	4,121
Loans, Fair Value	[1]	1,787,368	1,618,618
Financial Liabilities:
Deposits, Fair Value
FHLB and other borrowings, Fair Value
Junior subordinated debentures, Fair Value

[1] Carrying amount is net of the allowance for loan losses and previously presented impaired loans.