Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 1,197,597	$ 2,695,267
Short-term investments, at cost which approximates fair value	10,166	0
Receivables, less allowances of $650,813 in 2011 and $707,000 in 2010 for doubtful accounts	15,674,406	12,016,919
Inventories, priced at cost which is not in excess of market-
Finished cement	5,149,030	5,665,411
Work in process	1,847,228	2,095,963
Building products	4,941,766	4,692,327
Fuel, gypsum, paper sacks and other	7,091,146	5,838,637
Operating and maintenance supplies	11,898,371	11,751,562
Total inventories	30,927,541	30,043,900
Refundable federal and state income taxes	1,520,677	0
Deferred income taxes	735,000	735,000
Prepaid expenses	599,533	125,787
Total current assets	50,664,920	45,616,873
PROPERTY, PLANT AND EQUIPMENT, at cost, less accumulated depreciation and depletion of $178,130,522 in 2011 and $173,656,095 in 2010	87,167,973	84,912,099
DEFERRED INCOME TAXES	17,539,093	19,254,393
INVESTMENTS	20,783,277	23,984,320
OTHER ASSETS	1,904,441	331,143
Total Assets	178,059,704	174,098,828
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	5,787,130	5,054,236
Line of credit payable	7,574,661	0
Current portion of long-term debt	2,873,145	2,823,648
Accrued liabilities	5,484,131	7,932,115
Total current liabilities	21,719,067	15,809,999
LONG-TERM DEBT	9,079,210	9,154,087
ACCRUED POSTRETIREMENT BENEFITS	35,557,759	34,782,978
ACCRUED PENSION EXPENSE	13,149,064	12,723,073
STOCKHOLDERS' EQUITY:
Capital stock	6,412,070	6,330,820
Additional paid-in-capital	2,485,125	0
Retained earnings	97,939,977	102,270,564
Accumulated other comprehensive loss	(11,946,418)	(10,674,418)
Total stockholders' equity	98,554,604	101,628,691
Liabilities and Equity, Total	178,059,704	174,098,828
Class B Capital Stock [Member]
STOCKHOLDERS' EQUITY:
Capital stock	$ 3,663,850	$ 3,701,725