Goodwill and Other Intangible Assets (Other Intangible Assets Narrative) (Details Textual) (Ahmann & Martin Co. [Member], USD $) In Thousands, unless otherwise specified	0 Months Ended
Feb. 17, 2015
Ahmann & Martin Co. [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets, additions during the period	$ 12,000

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

No definition available.

Name:	us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration