Acquisition (Details Textual) (USD $)	Sep. 30, 2012	Jul. 31, 2012	Dec. 31, 2011
Business Acquisition, Cost of Acquired Entity, Cash Paid		$ 4,800,000
Business Acquisition, Purchase Price Allocation, Goodwill Amount			4,000,000
Business Acquisition, Purchase Price Allocation, Intangible Assets Other Than Goodwill			1,500,000
Business Acquisition, Purchase Price Allocation, Customer Related Intangible Assets Other Than Goodwill	736,000		947,000
Business Acquisition, Purchase Price Allocation, Non Compete Intangible Assets Other Than Goodwill	389,000		518,000
Business Combination, Liabilities Arising from Contingencies, Amount Recognized, Other than at Fair Value	$ 626,000