Long-Term Debt (Detail Textuals) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Industrial Development Revenue Bonds; secured by an equivalent letter of credit from a bank with interest payable monthly at a floating rate (0.43% at September 30, 2012) | Letter Of Credit From Bank
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.43%
Secured term loan payable to a government agency; monthly payments of $1,950 including interest fixed at 3% payable through fourth quarter of 2015
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.00%
Debt Instrument, Periodic Payment	$ 1,950
Secured term loan payable to a government agency; monthly principal payments of approximately $2,200 with interest waived payable through second quarter of 2012
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment	$ 2,200