Other Liabilities (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Aug. 29, 2014
Other Liabilities [Line Items]
Accrued pension costs	$ 5,606,000		$ 5,732,000	$ 7,500,000
Service cost	0	$ 0
Interest cost	45,000	45,000
Actuarial loss (gain)	(52,000)	$ (32,000)
Benefit obligation	$ 10,200,000
Discount rate	4.25%
Discount term	15 years
Monthly estate payment amount	$ 57,000
Discounted value	2,700,000
Accumulated prior service cost	$ 3,100,000
Accumulated prior service cost amortization period	15 years
Accrued pension costs included in other liabilities	$ 8,000,000
Supplemental Executive Retirement Plans [Member]
Other Liabilities [Line Items]
Accrued pension costs				$ 7,600,000