Shareholders' Equity (Narrative) (Details)			12 Months Ended			224 Months Ended
	Oct. 01, 2019 shares	Aug. 16, 2019	Dec. 31, 2019 USD ($) installment Plan shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2019 USD ($) Plan shares	Apr. 26, 2001 shares
Number of equity incentive plans | Plan			2			2
Stock option expiration period			10 years
Number of options granted (in shares) | shares				0	0
Stock compensation expense			$ 639,000	$ 718,000	$ 657,000
Stock compensation expense not recorded			0	0	0	$ 0
Unrecognized expense related to restricted stock and cash entitlements			2,022,000	2,172,000	1,983,000	$ 2,022,000
Stock compensation expense, net of tax			$ 1,427,000	$ 1,531,000	$ 1,157,000
Common Stock | 2001 Purchase Plan
Common stock, authorized shares repurchase (in shares) | shares							911,631
Common stock, shares repurchased (in shares) | shares			0	0	0	502,447
Bank
Retained earnings available for payment of dividends to parent company without prior regulatory approval			$ 76,000,000			$ 76,000,000
Nonqualified Stock Options
Stock option expiration period			20 years
Employee Stock Option
Number of options granted (in shares) | shares			0
Stock compensation expense			$ 0	$ 0	$ 0
Restricted Stock
Restricted stock as a percent of grant			60.00%
Cash credit entitlements as a percent of grant			40.00%
Number of installments | installment			3
Restricted stock vesting percentage upon satisfaction of service requirement			100.00%
Restricted Stock | Year Two
Percentage vested			33.30%
Restricted Stock | Year Three
Percentage vested			33.30%
Employee Stock Purchase Plan
Stock compensation expense			$ 23,000	39,000	32,000
Unrecognized expense related to restricted stock and cash entitlements			0	0	0	$ 0
Stock compensation expense, net of tax			$ 1,000	$ 29,000	$ 19,000
2009 LTIP Plan
Share-based compensation, number of shares available for future grants (in shares) | shares			0			0
2009 LTIP Plan | Restricted Stock | Year One
Percentage vested			33.30%
2019 LTIP Plan
Share-based compensation arrangement, number of shares authorized (in shares) | shares			1,000,000			1,000,000
2009 ESPP | Employee Stock Purchase Plan
Share-based compensation arrangement, purchase price discount from fair market value		95.00%
2019 ESPP
Share-based compensation, number of shares available for future grants (in shares) | shares	750,000
Offering period	3 months
Percentage of purchase price at offering date	95.00%