Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Other:
Cash Dividends Declared Per Common Share	$ 0.40	$ 0.40
Retained Earnings (In thousands, except per share data)
Other:
Cash Dividends Declared Per Common Share	$ 0.40	$ 0.40
Accumulated Other Comprehensive Loss (In thousands, except per share data)
Other:
Net unrealized gains on investment, net of tax expense, avaliable-for-sale	$ 239	$ 207
Adjustment for pension and other postretirement benefits, net of tax expense	$ 126	$ 29