Commitments And Contingencies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Commitments And Contingencies [Abstract]
Settlement amount	$ 750,000
Loss on disposal, restructuring costs and other special charges	700,000	447,000
Claim amount	200,000
Operating leases expense	400,000	500,000
Capital finance agreement amount	400,000	400,000
Future aggregate commitment	$ 3,700,000
Interest rate range, minimum	3.50%	4.678%
Interest rate range, maximum	7.17%	8.962%
Maturity period	3 years	3 years
Percentage of employees respresented by International Brotherhood of Electrical Workers	24.00%