Acquisitions (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Apr. 08, 2013 Chesapeake [Member]	Jun. 30, 2014 Chesapeake [Member]	Jun. 30, 2013 Chesapeake [Member] Selling, general and administrative expenses [Member]	Jun. 30, 2013 Chesapeake [Member] Selling, general and administrative expenses [Member]	Apr. 08, 2013 Customer relationships [Member] Chesapeake [Member]
Business Acquisition [Line Items]
Date of acquisition					Apr. 08, 2013
Acquisition purchase price, including holdback					$ 2,600,000
Initial holdback amount					200,000
Payment of holdback amount						200,000
Acquisition costs	0	154,000	0	257,000			200,000	200,000
Total assets acquired					3,100,000
Total liabilities assumed					1,400,000
Intangible assets acquired									1,200,000
Goodwill					$ 700,000