Pension Plan (Details) - USD ($)	1 Months Ended	6 Months Ended
	Apr. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Pension Plan (Details) [Line Items]
Defined Benefit Pension Plan Liabilities, Current		$ 1,200,000
Defined Benefit Pension Plan, Liabilities, Noncurrent		5,300,000
Defined Benefit Plan, Expected Contributions in Current Fiscal Year		1,200,000
Pension Contributions		469,000
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year		772,000
Pension Contributions, Minimum Payment, Due	$ 197,000	197,000
Increase (Decrease) in Deferred Pension Costs		52,000	$ 599,000
2009 Plan [Member]
Pension Plan (Details) [Line Items]
Increase (Decrease) in Deferred Pension Costs		285,000
2010 Plan [Member]
Pension Plan (Details) [Line Items]
Increase (Decrease) in Deferred Pension Costs		559,000
2012 Plan [Member]
Pension Plan (Details) [Line Items]
Increase (Decrease) in Deferred Pension Costs		$ 871,000