Acquisition (Narrative) (Details) (USD $)	Dec. 31, 2012	Jul. 27, 2011
Acquisition [Abstract]
Total purchase price of acquired entity		$ 5,094,000
Cash acquired in acquisition		862,000
Business acquisition, initial cash consideration paid		3,271,000
Business acquisition, deferred consideration		466,000
Business acquisition, working capital adjustment		656,000
Contingent consideration at fair value		701,000
Contingent consideration, maximum amount		818,000
Contingent consideration, estimated liabilities	$ 770,000