Business Combinations (Narrative) (Details) - The MDE Group [Member] - USD ($)	Apr. 01, 2015	Sep. 30, 2016
Business Acquisition [Line Items]
Acquired goodwill	$ 18,300,000
Contingent consideration liability	$ 338,000	$ 0
Period of time after closing for contingent consideration arrangements,	4 years
Contingent consideration maximum amount	$ 12,500,000.0
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible customer relationship	$ 7,000,000