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Debt (Details Textual) (USD $)
In Thousands, unless otherwise specified
 1 Months Ended 6 Months Ended 6 Months Ended 3 Months Ended
May 31, 2012
Jun. 30, 2012
Credit_Agreement
Jun. 30, 2012
W.E.T. Bank of America credit facility [Member]
Jun. 30, 2012
Eurocurrency Rate Loans [Member]
Jun. 30, 2012
Base Rate Loans [Member]
May 16, 2012
W.E.T. Term Note [Member]
Jun. 30, 2012
Maximum [Member]
Federal Funds Rate [Member]
Jun. 30, 2012
Maximum [Member]
US Bank of America credit facility [Member]
Jun. 30, 2012
Maximum [Member]
Eurocurrency Rate Loans [Member]
Jun. 30, 2012
Minimum [Member]
Federal Funds Rate [Member]
Jun. 30, 2012
Minimum [Member]
W.E.T. Bank of America credit facility [Member]
Jun. 30, 2012
Minimum [Member]
Eurocurrency Rate Loans [Member]
Mar. 31, 2012
Series C convertible preferred stock [Member]
Debt (Textual) [Abstract]                          
Percentage of convertible preferred stock                         8.00%
Outstanding credit agreements   2                      
Principal amortization of credit facility percentage year one   10.00%                      
Principal amortization of credit facility percentage year two   12.50%                      
Principal amortization of credit facility percentage year three   15.00%                      
Principal amortization of credit facility percentage year four   17.50%                      
Principal amortization of credit facility percentage year five   20.00%                      
Credit facility due date   Mar. 30, 2016                      
Interest rate     20.00% 3.00% 2.00%   0.50% 3.25% 1.10% 0.09% 1.00% 0.20%  
Net proceeds from the sale of treasury shares           $ 8,267              
Debt instrument, description   The Company has the option to elect interest rates based on either a Eurocurrency (LIBOR or EUIBOR) rate (“Eurocurrency Rate Loans”) (0.20% – 1.10% at June 30, 2012) or a base rate (“Base Rate Loans”) plus a margin (“Applicable Rate”) which varies based on the Consolidated Leverage Ratio of the Company, as defined by the US and W.E.T. Bank of America credit agreements. The base rate is equal to the highest of the Federal Funds Rate (0.09% at June 30, 2012) plus 0.5%, Bank of America’s prime rate (3.25% at June 30, 2012), or a one month Eurocurrency rate plus 1.0%. The Applicable Rate for the current period is 3.0% for Eurocurrency Rate Loans and 2.0% for Base Rate Loans.                      
Sale of Treasury Stock $ 6,353