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Retirement Benefit Plans (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Retirement Benefit Plans [Abstract]
Net acuarial losses related to supplemental retirement plans	$ 373	$ 401
Supplemental executive retirement plans recognized liabilities	3,882	3,916
Net actuarial loss for retirement plan, amortized from accumulated other comprehensive income into net periodic benefit cost	28
Total expense for 401(k) plan	$ 356	$ 321	$ 299

The aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

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