Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Represents the annual lease cost per contract.

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Amount of required minimum rental payments maturing after the fourth fiscal year following the latest fiscal year for operating leases having initial or remaining non-cancelable letter-terms in excess of one year.

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Commitments and Contingencies (Details 2) (USD $)	12 Months Ended
Commitments and Contingencies (Details 2) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Leases
Annual Lease Cost	$ 1,198,260
Future minimum lease payments under non-cancelable operating leases (with initial or remaining lease terms in excess of one year)
2013	964,496
2014	732,464
2015	620,593
2016	378,905
Thereafter	15,823
Total minimum lease payments	2,712,281
Leases Operating Expense
Rent expense	1,143,000	1,177,000	765,000
Termination fee		100,000
Lee, MA
Operating Leases
Annual Lease Cost	151,404
Tel Aviv, Israel
Operating Leases
Annual Lease Cost	312,000
Princeton, NJ
Operating Leases
Annual Lease Cost	104,628
Cupertino, CA
Operating Leases
Annual Lease Cost	513,948
Tucson, AZ
Operating Leases
Annual Lease Cost	8,400
London, UK
Operating Leases
Annual Lease Cost	47,880
Orvault, France
Operating Leases
Annual Lease Cost	13,560
Frankfurt, Germany
Operating Leases
Annual Lease Cost	34,440
Taipei, Taiwan
Operating Leases
Annual Lease Cost	$ 12,000