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Commitments (Details Textual) (USD $)	12 Months Ended		12 Months Ended		12 Months Ended
Commitments (Details Textual) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 Lease agreements [Member] sqft	Dec. 31, 2012 Lease agreements [Member] sqft	Dec. 31, 2012 Lease Property One [Member]
Commitments (Textual) [Abstract]
Operating lease facility area			48,000	33,000
Expiration of terminated prior lease			Jun. 30, 2014		Dec. 31, 2016
Commitments (Additional Textual) [Abstract]
Operating lease expiration year	2016
Income from lease move incentive		$ 350,000
Deferred rent credit		$ 294,000

The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.

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