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           Acquisition (Narrative) (Details) (USD $) 
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           Dec. 31, 2012 
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           Jul. 27, 2011 
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| 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 | 
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- Definition 
          Business Acquisition, Cost of Acquired Entity, Working Capital Adjustment No definition available. 
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- Definition 
          Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of potential cash payments that could result from the contingent consideration arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of cash paid to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Fair Value of the liabilities incurred by the acquirer to former owners of the acquiree, including the fair value of any contingent consideration. If liabilities transferred as consideration remain within the combined entity after the business combination (for example, because the assets or liabilities were transferred to the acquiree rather than to its former owners), and the acquirer therefore retains control of them; in that situation, the acquirer measures those liabilities at their carrying amounts immediately before the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The amount of cash and cash equivalents acquired in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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