Quarterly report pursuant to Section 13 or 15(d)

Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details)

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Commitments And Contingencies (Roseland Contingent Consideration) (Narrative) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Oct. 23, 2012
Business Acquisition, Contingent Consideration [Line Items]          
(Increase) decrease in accounts receivable, net     $ 603,000 $ 1,911,000  
Roseland Partners, L.L.C. [Member]          
Business Acquisition, Contingent Consideration [Line Items]          
Fair value of contingent consideration         $ 10,000,000
Business acquisition, contingent cash payment $ 1,200,000   1,200,000    
Benefit related to change in fair value of Earn Out liability $ 219,000   219,000    
Interest and other investment income   $ 0   $ 380,000  
Purchase accounting adjustments     $ 0    
Completion/Start Of Certain Developments [Member] | Minimum [Member]          
Business Acquisition, Contingent Consideration [Line Items]          
Probability of occurrence 92.00%   92.00%    
Completion/Start Of Certain Developments [Member] | Maximum [Member]          
Business Acquisition, Contingent Consideration [Line Items]          
Probability of occurrence 99.00%   99.00%    
Obtaining Of Tax Credits/Grants [Member]          
Business Acquisition, Contingent Consideration [Line Items]          
Probability of occurrence 50.00%   50.00%