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Long-Term Debt (Notes Payable) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Notes payable	$ 910	$ 320
Less current portion	(157)	(20)
Long-term portion	753	300
Equipment Loan [Member]
Debt Instrument [Line Items]
Repayment date	Mar. 31, 2016
Loan Agreements [Member]
Debt Instrument [Line Items]
Notes payable	400	300
Equipment Loan [Member]
Debt Instrument [Line Items]
Notes payable	510
Opportunity Grant Fund Notes Payable [Member]
Debt Instrument [Line Items]
Notes payable		$ 20
Repayment date	Apr. 30, 2012

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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