Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 949,695	$ 1,123,870
Restricted cash	2,570,505	0
Receivables, less allowances of $737,000 in 2012 and $670,000 in 2011 for doubtful accounts	21,431,607	15,970,034
Inventories, priced at cost which is not in excess of market-
Finished cement	3,898,183	3,963,233
Work in process	2,392,447	1,353,361
Building products	4,625,137	4,236,266
Fuel, gypsum, paper sacks and other	6,717,052	6,416,618
Operating and maintenance supplies	12,183,504	11,892,887
Total inventories	29,816,323	27,862,365
Refundable federal and state income taxes	16,805	353,199
Deferred income taxes	750,000	750,000
Prepaid expenses	698,719	631,461
Total current assets	56,233,654	46,690,929
PROPERTY, PLANT AND EQUIPMENT, at cost, less accumulated depreciation and depletion of $190,551,539 in 2012 and $182,427,598 in 2011	82,614,987	86,719,411
DEFERRED INCOME TAXES	15,741,410	18,416,410
INVESTMENTS	22,670,650	20,026,704
OTHER ASSETS	1,535,525	1,801,356
Total Assets	178,796,226	173,654,810
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	8,297,110	5,451,853
Line of credit payable	5,718,954	4,844,469
Current portion of term loan	2,991,621	2,920,023
Current portion of other long-term debt	175,000	175,000
Accrued liabilities	6,117,885	7,883,704
Total current liabilities	23,300,570	21,275,049
LONG-TERM DEBT	4,906,806	7,303,137
ACCRUED POSTRETIREMENT BENEFITS	34,156,316	33,327,243
ACCRUED PENSION EXPENSE	12,754,189	13,676,003
STOCKHOLDERS' EQUITY:
Capital stock	6,459,273	6,424,578
Additional paid-in-capital	2,485,125	2,485,125
Retained earnings	99,262,827	97,751,202
Accumulated other comprehensive loss	(8,103,692)	(12,197,034)
Total stockholders' equity	103,678,345	98,073,378
Liabilities and Equity, Total	178,796,226	173,654,810
Class B Capital Stock [Member]
STOCKHOLDERS' EQUITY:
Capital stock	$ 3,574,812	$ 3,609,507