Long-Term Debt (Schedule Of Long-Term Debt) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long-term Debt, Total	$ 46,607,385	$ 43,508,054
Less: current maturities of long-term debt obligations	4,113,000	3,698,883
Total	42,494,385	39,809,171
Two-Year, Quarterly Installments $225,500 Through December 31, 2014 [Member]
Debt Instrument [Line Items]
Debt instrument, maturity period	2 years
Secured Debt [Member] | Seven-Year, Quarterly Installments $250,000 Through December 31, 2014 [Member]
Debt Instrument [Line Items]
Long-term Debt, Total	11,500,000	12,750,000
Debt instrument, maturity period	7 years
Debt instrument, periodic principal payment	250,000
Secured Debt [Member] | Seven-Year, Revolving Credit Facility Of Up To $10,000,000 Through December 31, 2014 [Member]
Debt Instrument [Line Items]
Long-term Debt, Total	8,221,385	5,923,171
Debt instrument, maturity period	7 years
Debt instrument, face amount	10,000,000
Secured Debt [Member] | Two-Year, Quarterly Installments $225,500 Through December 31, 2014 [Member]
Debt Instrument [Line Items]
Long-term Debt, Total	4,500,000
Debt instrument, periodic principal payment	225,000
Secured Debt [Member] | Seven-Year, Quarterly Installments $609,500 Through December 31, 2014 [Member]
Debt Instrument [Line Items]
Long-term Debt, Total	22,386,000	24,824,000
Debt instrument, maturity period	7 years
Debt instrument, periodic principal payment	609,500
Secured Debt [Member] | Seven-Year, Revolving Credit Facility Of Up To $2,000,000 Through December 31, 2014 [Member]
Debt Instrument [Line Items]
Debt instrument, maturity period	7 years
Debt instrument, face amount	2,000,000
Unsecured Debt [Member] | Ten-Year Note, 5% Interest Rate Due January 1, 2012 [Member]
Debt Instrument [Line Items]
Long-term Debt, Total		$ 10,883
Debt instrument, maturity period	10 years
Fixed interest rate	5.00%