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Quarterly Financial Information (Summary Of Quarterly Financial Information) (Details) (USD $) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Quarterly Financial Information Summary Of Quarterly Financial Information Details Usd                      
Total Revenues $ 7,643,578us-gaap_Revenues $ 7,764,783us-gaap_Revenues $ 7,621,768us-gaap_Revenues $ 7,440,111us-gaap_Revenues $ 7,735,148us-gaap_Revenues $ 7,682,727us-gaap_Revenues $ 7,763,234us-gaap_Revenues $ 7,949,783us-gaap_Revenues $ 30,470,240us-gaap_Revenues $ 31,130,892us-gaap_Revenues $ 32,756,570us-gaap_Revenues
Income Before Taxes (70,276)us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 58,123us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 402,321us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 906,337us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 1,342,388us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes (543,862)us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 386,071us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 56,178us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 1,296,505us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 1,240,775us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 2,855,036us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes
Net Income $ (48,202)us-gaap_NetIncomeLoss $ 32,774us-gaap_NetIncomeLoss $ 270,006us-gaap_NetIncomeLoss $ 591,783us-gaap_NetIncomeLoss $ 713,491us-gaap_NetIncomeLoss $ (368,366)us-gaap_NetIncomeLoss $ 250,207us-gaap_NetIncomeLoss $ 8,336us-gaap_NetIncomeLoss $ 846,361us-gaap_NetIncomeLoss $ 603,668us-gaap_NetIncomeLoss $ 1,953,728us-gaap_NetIncomeLoss
Basic Earnings Per Share $ (0.01)us-gaap_EarningsPerShareBasic $ 0.01us-gaap_EarningsPerShareBasic $ 0.05us-gaap_EarningsPerShareBasic $ 0.11us-gaap_EarningsPerShareBasic $ 0.13us-gaap_EarningsPerShareBasic $ (0.07)us-gaap_EarningsPerShareBasic $ 0.05us-gaap_EarningsPerShareBasic $ 0.00us-gaap_EarningsPerShareBasic $ 0.16us-gaap_EarningsPerShareBasic $ 0.11us-gaap_EarningsPerShareBasic $ 0.37us-gaap_EarningsPerShareBasic
Diluted Earnings Per Share $ (0.01)us-gaap_EarningsPerShareDiluted $ 0.01us-gaap_EarningsPerShareDiluted $ 0.05us-gaap_EarningsPerShareDiluted $ 0.11us-gaap_EarningsPerShareDiluted $ 0.13us-gaap_EarningsPerShareDiluted $ (0.07)us-gaap_EarningsPerShareDiluted $ 0.05us-gaap_EarningsPerShareDiluted $ 0.00us-gaap_EarningsPerShareDiluted $ 0.16us-gaap_EarningsPerShareDiluted $ 0.11us-gaap_EarningsPerShareDiluted $ 0.36us-gaap_EarningsPerShareDiluted