Annual report pursuant to section 13 and 15(d)

Warrants and Derivative Financial Instruments (Details Textual)

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Warrants and Derivative Financial Instruments (Details Textual) (USD $)
 1 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2010
Dec. 31, 2012
Dec. 31, 2011
Feb. 16, 2010
Initial Public Offering Warrants [Member]
Dec. 31, 2012
Private Placement Warrants [Member]
Jun. 30, 2012
Interest rate swap [Member]
Dec. 31, 2012
Interest rate swap [Member]
Dec. 31, 2011
Interest rate swap [Member]
Warrants and Derivative Financial Instruments (Textual) [Abstract]                
Outstanding Warrants       8,300,000 1,142,858      
Expiry date of privately held warrants   Apr. 11, 2011            
Interest Rate Swap Outstanding               $ 300,000
Interest rate swap agreement, notional value             200,000 15,600,000
AOCL relating to the hedging relationship was reclassified to interest expense   1,000 (158,000)     100,000 1,000 (158,000)
Warrants and Derivative Financial Instruments (Additional Textual) [Abstract]                
Expiration Date Mar. 17, 2010              
Realized gain as a result of expiration   $ 100,000