Annual report pursuant to Section 13 and 15(d)

Statements of Net Proceeds From All Sources (Equity)

v3.6.0.2
Statements of Net Proceeds From All Sources (Equity) - USD ($)
Sub-Share Certificates of Proprietary Interest, Per Share [Member]
AOCI Attributable to Parent [Member]
Net Proceeds From All Sources [Member]
Total
Balances (in shares) at Dec. 31, 2013 8,473,202      
Balances at Dec. 31, 2013   $ (622,012) $ 18,551,678 $ 17,929,666
Net income   34,765,020 34,765,020
Periodic pension costs, net of income taxes   (730,782) (730,782)
Cost of Sub-share Certificates in Certificates of Proprietary Interest purchased and cancelled (in shares) (150,803)      
Cost of Sub-share Certificates in Certificates of Proprietary Interest purchased and cancelled     (22,963,786) (22,963,786)
Dividends paid     (2,280,301) (2,280,301)
Balances (in shares) at Dec. 31, 2014 8,322,399      
Balances at Dec. 31, 2014   (1,352,794) 28,072,611 26,719,817
Net income     50,038,507 50,038,507
Periodic pension costs, net of income taxes   103,888 103,888
Cost of Sub-share Certificates in Certificates of Proprietary Interest purchased and cancelled (in shares) (204,335)      
Cost of Sub-share Certificates in Certificates of Proprietary Interest purchased and cancelled   (28,771,073) (28,771,073)
Dividends paid   (2,402,460) (2,402,460)
Balances (in shares) at Dec. 31, 2015 8,118,064      
Balances at Dec. 31, 2015   (1,248,906) 46,937,585 45,688,679
Net income   37,239,550 37,239,550
Periodic pension costs, net of income taxes   289,343 289,343
Cost of Sub-share Certificates in Certificates of Proprietary Interest purchased and cancelled (in shares) (190,750)      
Cost of Sub-share Certificates in Certificates of Proprietary Interest purchased and cancelled   (33,085,867) (33,085,867)
Dividends paid   (2,507,183) (2,507,183)
Balances (in shares) at Dec. 31, 2016 7,927,314      
Balances at Dec. 31, 2016   $ (959,563) $ 48,584,085 $ 47,624,522