Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	$ 15,000	$ 8,000
Defined Benefit Plan, Schedule Of Expected Payments Years Six Through Ten	2,231,000
Defined Benefit Plan, Schedule Of Total Expected Payments	2,231,000
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, before Tax	15,000	8,000
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	(2,231,000)	(2,255,000)
Bonus Compensation	2,100,000	1,500,000	$ 2,000,000
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	767,000	959,000
Defined Benefit Plan, Benefit Obligation	2,231,000	2,255,000	1,032,000
Defined Benefit Plan, Interest Cost	86,000	48,000
Defined Benefit Plan, Actuarial Gain (Loss)	110,000	(216,000)
Defined Benefit Plan, Plan Amendments	$ 0	959,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	5.00%
Change in minimum postretirement medical obligations	$ 53,000	179,000
Deferred Compensation Plan Assets	4,341,000	4,085,000
Deferred Compensation Liability, Current and Noncurrent	5,247,000	4,919,000
Defined Benefit Plan, Funded Status of Plan	(2,231,000)	(2,255,000)
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	820,000	1,138,000
Defined Benefit Plan, Contributions by Employer	0		$ 200,000
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax	$ 101,000	$ 156,000
Chief Executive Officer [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.00%	3.80%
Chief Financial Officer [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.20%	3.90%
Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components	$ 22,500
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation	$ 264,000
Defined Contribution Plan, Employer Matching Contribution, Percent	2.00%
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components	$ (22,500)
Defined Contribution Plan, Employer Matching Contribution, Percent	3.00%
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation	$ (397,000)
Selling, General and Administrative Expenses [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Interest Cost	86,000	$ 48,000
Defined Benefit Plan, Actuarial Gain (Loss)	0	100,000
Defined Benefit Plan, Net Periodic Benefit Cost	$ 86,000	$ 148,000