Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 2,529,289	$ 6,401,752
Receivables, less allowances of $560,000 in 2014 and $490,000 in 2013 for doubtful accounts	17,919,793	12,139,618
Inventories, priced at cost which is not in excess of market-
Finished cement	4,031,293	4,420,327
Work in process	3,600,643	3,595,223
Building products	4,230,625	3,883,085
Fuel, gypsum, paper sacks and other	5,886,894	6,570,913
Operating and maintenance supplies	13,236,996	12,794,198
Total inventories	30,986,451	31,263,746
Deferred income taxes	660,000	660,000
Prepaid expenses	1,835,611	1,042,033
Total current assets	53,931,144	51,507,149
Property, Plant and Equipment, at cost, less accumulated depreciation and depletion of $198,747,997 in 2014 and $183,868,729 in 2013	85,254,822	80,940,604
DEFERRED INCOME TAXES	6,742,576	8,179,577
INVESTMENTS	29,379,249	25,292,634
INVESTMENTS IN AFFILIATES	4,008,136	3,428,633
OTHER ASSETS	3,092,868	4,757,265
Total Assets	182,408,795	174,105,862
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	6,795,921	6,327,952
Current portion of term loan	1,428,571	1,428,571
Current portion of other long-term debt	175,000	175,000
Accrued liabilities	9,249,624	6,754,288
Total current liabilities	17,649,116	14,685,811
LONG-TERM DEBT	10,921,867	12,061,164
ACCRUED POSTRETIREMENT BENEFITS	25,231,702	24,917,379
ACCRUED PENSION EXPENSE	5,167,675	8,009,127
STOCKHOLDERS' EQUITY
Capital stock	6,497,603	6,498,830
Additional paid-in-capital	2,485,125	2,485,125
Retained earnings	105,536,192	98,518,546
Accumulated other comprehensive income	5,507,330	3,511,383
TOTAL STOCKHOLDERS' EQUITY	123,438,435	114,432,381
Total Liabilities and Stockholders' Equity	182,408,795	174,105,862
Class B Capital Stock [Member]
STOCKHOLDERS' EQUITY
Capital stock	$ 3,412,185	$ 3,418,497