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Short-Term and Long-Term Debt (Standby Term Note) (Details) (Stand-By Term Note, USD $)
1 Months Ended 3 Months Ended 1 Months Ended 3 Months Ended 0 Months Ended
Feb. 28, 2010
Mar. 31, 2014
Dec. 31, 2013
Oct. 31, 2011
Rbs Citizens [Member]
Mar. 31, 2014
Rbs Citizens [Member]
Dec. 31, 2013
Rbs Citizens [Member]
Oct. 08, 2010
Rbs Citizens [Member]
Jul. 19, 2013
Peoples Capital [Member]
Mar. 31, 2014
Peoples Capital [Member]
Dec. 31, 2013
Peoples Capital [Member]
Debt Instrument [Line Items]                    
Line of credit, maximum borrowing amount $ 1,500,000           $ 450,000 $ 1,303,900    
Debt instrument, monthly principal payment 25,000     887       24,511    
Debt instrument, maturity date         5 years     60 months    
Credit facility, amount outstanding   $ 275,000 $ 350,000   $ 27,508 $ 30,171     $ 1,246,000 $ 1,303,900
Interest rate additional rate above LIBOR 3.75% 3.90%   3.00% 3.16%          
Debt interest rate               4.84%    
Interest rate on outstanding term loan 5.70%