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Condensed Income Statement (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Condensed Income Statements, Captions [Line Items]                              
Other expenses                         $ (10,901,645) $ (10,930,497) $ (11,412,259)
Income before income tax benefit and equity in undistributed net income of subsidiaries $ 289,000 $ 60,000 $ 352,000 $ 317,000 $ 552,000 $ (169,000) $ 786,000 $ 429,000 $ 521,000 $ 637,000 $ 498,000 $ 567,000 1,017,656 1,597,537 2,223,178
Income tax benefit                         (83,064) 244,921 308,652
Net income $ 395,000 $ 115,000 $ 308,000 $ 283,000 $ 447,000 $ 8,000 $ 518,000 $ 380,000 $ 480,000 $ 526,000 $ 435,000 $ 473,000 1,100,720 1,352,616 1,914,526
Parent Company                              
Condensed Income Statements, Captions [Line Items]                              
Dividends and distributions from subsidiaries                         1,005,000 678,000 980,000
Other expenses                         (92,831) (86,843) (77,375)
Income before income tax benefit and equity in undistributed net income of subsidiaries                         912,169 591,157 902,625
Income tax benefit                         36,219 31,958 28,136
Change in undistributed equity of subsidiaries                         152,332 729,501 983,765
Net income                         $ 1,100,720 $ 1,352,616 $ 1,914,526