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Subsequent Events (Details) (USD $)	0 Months Ended		3 Months Ended
Subsequent Events (Details) (USD $)	May 10, 2013	Apr. 30, 2013	Mar. 31, 2013	Mar. 31, 2012
Subsequent Events [Abstract]
Borrowings under Credit Facility		$ 2,000,000	$ 0	$ 7,400,000
Amount received from customer for rent and refundable maintenance services	$ 785,000

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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