$USLM
UNITED STATES LIME & MINERALS INC Stock $uslm

$uslm Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000104746913002339 Filed on March 07, 2013

Income Statement

Concept	2011 Q4	2011 Q3	2011 Q2
Revenue	$33.49M	$39.18M	$36.84M
YoY Change	14.78%	22.95%	-2.87%
Cost Of Revenue	$24.50M	$26.64M	$26.44M
YoY Change	10.91%	15.82%	-3.4%
Gross Profit	$8.998M	$12.54M	$10.40M
YoY Change	26.73%	41.44%	-1.52%
Gross Profit Margin	26.86%	32.0%	28.23%
Selling, General & Admin	$2.280M	$2.297M	$2.080M
YoY Change	4.11%	22.31%	6.67%
% of Gross Profit	25.34%	18.32%	20.0%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.400M	$3.540M	$3.430M
YoY Change	-9.33%	9.6%	2.08%
% of Gross Profit	37.79%	28.23%	32.98%
Operating Expenses	$2.280M	$2.297M	$2.080M
YoY Change	4.11%	22.31%	7.22%
Operating Profit	$6.718M	$10.24M	$8.319M
YoY Change	36.82%	46.59%	-3.49%
Interest Expense	-$600.0K	$618.0K	-$630.0K
YoY Change	-13.04%	-12.59%	-5.97%
% of Operating Profit	-8.93%	6.03%	-7.57%
Other Income/Expense, Net	$20.00K	-$568.0K	$40.00K
YoY Change	-60.0%	-18.04%	0.0%
Pretax Income	$6.140M	$9.674M	$7.730M
YoY Change	43.79%	53.7%	-3.25%
Income Tax	$1.630M	$2.612M	$1.940M
% Of Pretax Income	26.55%	27.0%	25.1%
Net Earnings	$4.520M	$7.060M	$5.800M
YoY Change	42.59%	55.16%	2.47%
Net Earnings / Revenue	13.49%	18.02%	15.74%
Basic Earnings Per Share	$0.73	$1.12	$0.90
Diluted Earnings Per Share	$0.72	$1.11	$0.90
COMMON SHARES
Basic Shares Outstanding	6.217M shares	6.322M shares	6.417M shares
Diluted Shares Outstanding		6.338M shares	6.433M shares

Balance Sheet

Concept	2011 Q4	2011 Q3	2011 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$53.40M	$46.40M	$46.30M
YoY Change	47.51%	41.46%	90.53%
Cash & Equivalents	$53.37M	$46.37M	$46.30M
Short-Term Investments
Other Short-Term Assets	$1.700M	$1.100M	$700.0K
YoY Change	41.67%	266.67%	75.0%
Inventory	$10.76M	$9.503M	$9.700M
Prepaid Expenses
Receivables	$15.60M	$18.74M	$18.10M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$81.45M	$75.73M	$74.80M
YoY Change	31.62%	31.02%	41.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$121.3M	$122.4M	$122.6M
YoY Change	-3.9%	-3.63%	-4.59%
Goodwill
YoY Change
Intangibles	$7.000K
YoY Change
Long-Term Investments
YoY Change
Other Assets	$302.0K	$316.0K	$300.0K
YoY Change	-19.25%	-21.0%	-25.0%
Total Long-Term Assets	$121.6M	$122.7M	$123.0M
YoY Change	-3.94%	-3.69%	-4.65%
TOTAL ASSETS
Total Short-Term Assets	$81.45M	$75.73M	$74.80M
Total Long-Term Assets	$121.6M	$122.7M	$123.0M
Total Assets	$203.1M	$198.4M	$197.8M
YoY Change	7.73%	7.14%	8.8%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$5.392M	$5.772M	$5.600M
YoY Change	18.64%	22.81%	-3.45%
Accrued Expenses	$4.376M	$4.706M	$4.600M
YoY Change	-29.03%	-12.85%	-9.8%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$6.250M	$5.000M	$5.000M
YoY Change	25.0%	0.0%	0.0%
Total Short-Term Liabilities	$16.02M	$15.48M	$15.20M
YoY Change	1.95%	1.83%	-4.4%
LONG-TERM LIABILITIES
Long-Term Debt	$26.67M	$27.92M	$29.20M
YoY Change	-15.79%	-15.15%	-14.62%
Other Long-Term Liabilities	$4.363M	$4.304M	$3.700M
YoY Change	12.04%	-10.33%	-15.91%
Total Long-Term Liabilities	$31.03M	$32.22M	$32.90M
YoY Change	-12.74%	-14.53%	-14.77%
TOTAL LIABILITIES
Total Short-Term Liabilities	$16.02M	$15.48M	$15.20M
Total Long-Term Liabilities	$31.03M	$32.22M	$32.90M
Total Liabilities	$60.06M	$60.15M	$58.50M
YoY Change	-0.24%	-1.22%	-5.49%
SHAREHOLDERS EQUITY
Retained Earnings	$136.9M	$132.4M
YoY Change	19.34%
Common Stock	$17.84M	$17.62M
YoY Change	4.99%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$8.740M	$8.673M
YoY Change	1995.92%
Treasury Stock Shares	215.3K shares
Shareholders Equity	$143.0M	$138.3M	$139.3M
YoY Change
Total Liabilities & Shareholders Equity	$203.1M	$198.4M	$197.8M
YoY Change	7.73%	7.14%	8.8%

Cashflow Statement

Concept	2011 Q4	2011 Q3	2011 Q2
OPERATING ACTIVITIES
Net Income	$4.520M	$7.060M	$5.800M
YoY Change	42.59%	55.16%	2.47%
Depreciation, Depletion And Amortization	$3.400M	$3.540M	$3.430M
YoY Change	-9.33%	9.6%	2.08%
Cash From Operating Activities	$9.410M	$12.63M	$11.05M
YoY Change	36.57%	7.76%	13.68%
INVESTING ACTIVITIES
Capital Expenditures	-$2.330M	-$3.190M	-$2.150M
YoY Change	5.91%	56.37%	-7.33%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$50.00K	$70.00K
YoY Change	-100.0%		133.33%
Cash From Investing Activities	-$2.340M	-$3.150M	-$2.070M
YoY Change	8.84%	55.17%	-10.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-60.00K	-9.380M	-1.300M
YoY Change	-95.35%	650.4%	0.78%
NET CHANGE
Cash From Operating Activities	9.410M	12.63M	11.05M
Cash From Investing Activities	-2.340M	-3.150M	-2.070M
Cash From Financing Activities	-60.00K	-9.380M	-1.300M
Net Change In Cash	7.010M	100.0K	7.680M
YoY Change	103.19%	-98.82%	25.29%
FREE CASH FLOW
Cash From Operating Activities	$9.410M	$12.63M	$11.05M
Capital Expenditures	-$2.330M	-$3.190M	-$2.150M
Free Cash Flow	$11.74M	$15.82M	$13.20M
YoY Change	29.15%	14.97%	9.63%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	153333000	USD
CY2011	us-gaap	Defined Benefit Plan Target Plan Asset Allocations DefinedBenefitPlanTargetPlanAssetAllocations	1.000	pure
CY2012	dei	Entity Registrant Name EntityRegistrantName	UNITED STATES LIME & MINERALS INC
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	22101000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	30144000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5678000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7958000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7018000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16423000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	22186000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18040000	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.50
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.82
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.81
CY2012Q2	dei	Entity Public Float EntityPublicFloat	80822508	USD
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	5560026	shares
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0000082020
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	29787000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	14552000	USD
CY2012Q4	us-gaap	Inventory Net InventoryNet	14127000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1493000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	59959000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	53372000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	15595000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	10764000	USD
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	1722000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	81453000	USD
CY2012Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	18301000	USD
CY2012Q4	uslm	Buildings And Building And Leasehold Improvements BuildingsAndBuildingAndLeaseholdImprovements	3845000	USD
CY2012Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	199994000	USD
CY2012Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	831000	USD
CY2012Q4	uslm	Automotive Equipment AutomotiveEquipment	1619000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	242675000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	128633000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	114042000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	245000	USD
CY2012Q4	us-gaap	Assets Assets	174246000	USD
CY2011Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	18220000	USD
CY2011Q4	uslm	Buildings And Building And Leasehold Improvements BuildingsAndBuildingAndLeaseholdImprovements	3477000	USD
CY2011Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	195443000	USD
CY2011Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	909000	USD
CY2011Q4	uslm	Automotive Equipment AutomotiveEquipment	1690000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	236740000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	115422000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	121318000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	302000	USD
CY2011Q4	us-gaap	Assets Assets	203073000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	5000000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	4171000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	4169000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	13340000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	6250000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	5392000	USD
CY2011Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	4376000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	16018000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	21667000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	15654000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3230000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	53891000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	26667000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	13012000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	4363000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	60060000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	648000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2392000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13781000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	108000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-2144000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-2359000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-2607000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	25058000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.88
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.87
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.49
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	5.00
CY2011Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	5.00
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000	shares
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3001000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	136910000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	645000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	49587000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	8740000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	120355000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	174246000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	143013000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	203073000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue		USD
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	138525000	USD
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	142582000	USD
CY2010	us-gaap	Sales Revenue Net SalesRevenueNet	132594000	USD
CY2012	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	105087000	USD
CY2012	us-gaap	Gross Profit GrossProfit	33438000	USD
CY2011	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	101233000	USD
CY2010	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	96553000	USD
CY2010	us-gaap	Gross Profit GrossProfit	36041000	USD
CY2011	us-gaap	Gross Profit GrossProfit	41349000	USD
CY2011	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	8846000	USD
CY2010	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	8376000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	24245000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	32503000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	27665000	USD
CY2012	us-gaap	Interest Expense InterestExpense	2163000	USD
CY2011	us-gaap	Interest Expense InterestExpense	2495000	USD
CY2010	us-gaap	Interest Expense InterestExpense	2715000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	19000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	136000	USD
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	500000	shares
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	15000000	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	15000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	6477716	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	6450718	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	919708	shares
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	215279	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1756000	USD
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2011Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	194000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	184000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	304000	USD
CY2012	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	545000	USD
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	157000	USD
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-321000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	609000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	8000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-291000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	17032000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	22194000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	17749000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8292000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	42000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-8250000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15044000	USD
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	46000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2131000	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-145000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	1082000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1043000	USD
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	3363000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-392000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-4000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-1086000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-174000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	31687000	USD
CY2011	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	45000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3560000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-96000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	848000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13611000	USD
CY2010	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	35000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3073000	USD
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-11000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	737000	USD
CY2011	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	164000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-18000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-5000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-294000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	88000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	38507000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	474000	USD
CY2010	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1141000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-244000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	118000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	197000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-48000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	34184000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9413000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	128000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-9285000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9328000	USD
CY2010	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	74000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-9254000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6250000	USD
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	75000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	40847000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-47022000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-23585000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3750000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16466000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8323000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-12073000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	17149000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5000000	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	173000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-5173000	USD
CY2010	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	19757000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	36223000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	128294000	USD
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	109981000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	737000	USD
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	173000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	848000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1082000	USD
CY2011	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	8323000	USD
CY2012	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	40847000	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div style='font-size:10.0pt;FONT-FAMILY: Times New Roman;'> <dl compact="compact"> <dt style="MARGIN-BOTTOM: -11pt; FONT-FAMILY: times"><font size="2">(c)</font></dt> <dd style="FONT-FAMILY: times"><font size="2">Use of Estimates</font></dd></dl> <ul> <li style="list-style: none"> <p style="FONT-FAMILY: times"><font size="2">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("US GAAP") requires management to make estimates and judgments that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates and judgments.</font></p></li></ul></div>
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	16859	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5715761	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6362441	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6417817	shares
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-100000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	234000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-47000	USD
CY2012	uslm	Other Comprehensive Income Reclassification To Interest Expense Before Tax OtherComprehensiveIncomeReclassificationToInterestExpenseBeforeTax	1320000	USD
CY2011	uslm	Other Comprehensive Income Reclassification To Interest Expense Before Tax OtherComprehensiveIncomeReclassificationToInterestExpenseBeforeTax	1587000	USD
CY2010	uslm	Other Comprehensive Income Reclassification To Interest Expense Before Tax OtherComprehensiveIncomeReclassificationToInterestExpenseBeforeTax	1805000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	348000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	4000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-165000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-463000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-1341000	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-2308000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-1674000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	718000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-2219000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	782000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3547000	USD
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	147000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	147000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	149000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4398000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3945000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	7735000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	10550000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	8770000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-2048000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-2366000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Depletion IncomeTaxReconciliationNondeductibleExpenseDepletion	-1584000	USD
CY2012	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	335000	USD
CY2011	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	308000	USD
CY2010	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	397000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	331000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	24000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	155000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-5000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	58000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	74000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.093	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.079	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	-0.063	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.015	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.010	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activities EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivities	0.016	pure
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.015	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.001	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.006	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003	pure
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.257	pure
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.264	pure
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.280	pure
CY2012Q4	uslm	Deferred Tax Liabilities Lime And Limestone Property Plant And Equipment DeferredTaxLiabilitiesLimeAndLimestonePropertyPlantAndEquipment	19306000	USD
CY2011Q4	uslm	Deferred Tax Liabilities Lime And Limestone Property Plant And Equipment DeferredTaxLiabilitiesLimeAndLimestonePropertyPlantAndEquipment	17625000	USD
CY2012Q4	uslm	Deferred Tax Liabilities Natural Gas Interests Drilling Costs And Equipment DeferredTaxLiabilitiesNaturalGasInterestsDrillingCostsAndEquipment	3952000	USD
CY2011Q4	uslm	Deferred Tax Liabilities Natural Gas Interests Drilling Costs And Equipment DeferredTaxLiabilitiesNaturalGasInterestsDrillingCostsAndEquipment	4247000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	344000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	316000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	23602000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	22188000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	6489000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	7364000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	412000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	448000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	956000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	1268000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	769000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	611000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	8626000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	9691000	USD
CY2012	uslm	Operating Leases Term Low End Of Range OperatingLeasesTermLowEndOfRange	P1Y
CY2012	uslm	Operating Leases Term High End Of Range OperatingLeasesTermHighEndOfRange	P5Y
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	393000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	0	USD
CY2012	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2010Q4	us-gaap	Assets Assets	188498000	USD
CY2012	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	8292000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1319000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	1388000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1569000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1462000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1244000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	970000	USD
CY2011	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	9413000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	33207000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	24162000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	12764000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	29948000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Standardized Measure DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesStandardizedMeasure	26456000	USD
CY2011Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	29948000	USD
CY2010Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	26456000	USD
CY2012	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	1891000	USD
CY2011	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	2269000	USD
CY2010	us-gaap	Results Of Operations Production Or Lifting Costs ResultsOfOperationsProductionOrLiftingCosts	1421000	USD
CY2012	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	1291000	USD
CY2011	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	1402000	USD
CY2010	us-gaap	Results Of Operations Depreciation Depletion And Amortization And Valuation Provisions ResultsOfOperationsDepreciationDepletionAndAmortizationAndValuationProvisions	1172000	USD
CY2012	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	3939000	USD
CY2011	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	9207000	USD
CY2010	us-gaap	Results Of Operations Income Before Income Taxes ResultsOfOperationsIncomeBeforeIncomeTaxes	4832000	USD
CY2012	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	1044000	USD
CY2011	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	2664000	USD
CY2010	us-gaap	Results Of Operations Income Tax Expense ResultsOfOperationsIncomeTaxExpense	1410000	USD
CY2012	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	2895000	USD
CY2012Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	12764000	USD
CY2011	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	6543000	USD
CY2010	us-gaap	Results Of Operations Oil And Gas Producing Activities Net Income Excluding Corporate Overhead And Interest Costs ResultsOfOperationsOilAndGasProducingActivitiesNetIncomeExcludingCorporateOverheadAndInterestCosts	3422000	USD
CY2012	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	81000	USD
CY2011	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	927000	USD
CY2010	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	2204000	USD
CY2011	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	3000	USD
CY2010	us-gaap	Costs Incurred Asset Retirement Obligation Incurred CostsIncurredAssetRetirementObligationIncurred	3000	USD
CY2010Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	17295000	USD
CY2012Q4	us-gaap	Oil And Gas Property Successful Effort Method Accumulated Depreciation Depletion And Amortization OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization	7294000	USD
CY2011Q4	us-gaap	Oil And Gas Property Successful Effort Method Accumulated Depreciation Depletion And Amortization OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization	5997000	USD
CY2010Q4	us-gaap	Oil And Gas Property Successful Effort Method Accumulated Depreciation Depletion And Amortization OilAndGasPropertySuccessfulEffortMethodAccumulatedDepreciationDepletionAndAmortization	4593000	USD
CY2012Q4	us-gaap	Oil And Gas Property Successful Effort Method Net OilAndGasPropertySuccessfulEffortMethodNet	11007000	USD
CY2011Q4	us-gaap	Oil And Gas Property Successful Effort Method Net OilAndGasPropertySuccessfulEffortMethodNet	12223000	USD
CY2010Q4	us-gaap	Oil And Gas Property Successful Effort Method Net OilAndGasPropertySuccessfulEffortMethodNet	12702000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	57882000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	120920000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflows	102198000	USD
CY2012	uslm	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production And Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndDevelopmentCosts	23905000	USD
CY2011	uslm	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production And Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndDevelopmentCosts	32138000	USD
CY2010	uslm	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production And Development Costs DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndDevelopmentCosts	31406000	USD
CY2012	uslm	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows Net DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflowsNet	33977000	USD
CY2011	uslm	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows Net DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflowsNet	88782000	USD
CY2010	uslm	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Cash Inflows Net DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureCashInflowsNet	70792000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	9193000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	25627000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Income Tax Expense DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureIncomeTaxExpense	20174000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	24784000	USD
CY2011	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	63155000	USD
CY2010	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Net Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureNetCashFlows	50618000	USD
CY2012	us-gaap	Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves10 Percent Annual Discount For Estimated Timing Of Cash Flows DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves10PercentAnnualDiscountForEstimatedTimingOfCashFlows	12020000	USD
CY2012	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-7067000	USD
CY2011	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	2403000	USD
CY2010	us-gaap	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	8689000	USD
CY2012	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	5230000	USD
CY2011	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	7805000	USD
CY2010	us-gaap	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	5992000	USD
CY2010	us-gaap	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	1737000	USD
CY2010	us-gaap	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-716000	USD
CY2012	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-5863000	USD
CY2011	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	4086000	USD
CY2010	us-gaap	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-5488000	USD
CY2012	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-116000	USD
CY2011	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-925000	USD
CY2010	us-gaap	Previously Estimated Development Costs Incurred During Period PreviouslyEstimatedDevelopmentCostsIncurredDuringPeriod	-1549000	USD
CY2012	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	7419000	USD
CY2011	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-1609000	USD
CY2010	us-gaap	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-1237000	USD
CY2012	us-gaap	Accretion Of Discount AccretionOfDiscount	1603000	USD
CY2011	us-gaap	Accretion Of Discount AccretionOfDiscount	3211000	USD
CY2010	us-gaap	Accretion Of Discount AccretionOfDiscount	2962000	USD
CY2012	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	-8162000	USD
CY2011	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	2281000	USD
CY2010	us-gaap	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	1876000	USD
CY2009Q4	us-gaap	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	23076000	USD
CY2012Q1	us-gaap	Sales Revenue Net SalesRevenueNet	36028000	USD
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	36498000	USD
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	34116000	USD
CY2012Q1	us-gaap	Gross Profit GrossProfit	9203000	USD
CY2012Q2	us-gaap	Gross Profit GrossProfit	8353000	USD
CY2012Q3	us-gaap	Gross Profit GrossProfit	7759000	USD
CY2012Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4624000	USD
CY2012Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4060000	USD
CY2012Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3947000	USD
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.73
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.75
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2011Q1	us-gaap	Sales Revenue Net SalesRevenueNet	33066000	USD
CY2011Q2	us-gaap	Sales Revenue Net SalesRevenueNet	36840000	USD
CY2011Q3	us-gaap	Sales Revenue Net SalesRevenueNet	39182000	USD
CY2011Q1	us-gaap	Gross Profit GrossProfit	9412000	USD
CY2011Q2	us-gaap	Gross Profit GrossProfit	10399000	USD
CY2011Q3	us-gaap	Gross Profit GrossProfit	12539000	USD
CY2011Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4813000	USD
CY2011Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5795000	USD
CY2011Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	7062000	USD
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.75
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.12
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.75
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.11
CY2012	us-gaap	Defined Benefit Plan Target Plan Asset Allocations DefinedBenefitPlanTargetPlanAssetAllocations	1.000	pure
CY2012	us-gaap	Interest Paid InterestPaid	2069000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3000000	USD
CY2010	us-gaap	Interest Paid InterestPaid	2681000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3956000	USD
CY2011	us-gaap	Interest Paid InterestPaid	2395000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4529000	USD
CY2012	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-105000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	429000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	360000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	525000	USD
CY2012	us-gaap	Allowance For Doubtful Accounts Receivable Charge Offs AllowanceForDoubtfulAccountsReceivableChargeOffs	-9000	USD
CY2011	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-91000	USD
CY2011	us-gaap	Allowance For Doubtful Accounts Receivable Charge Offs AllowanceForDoubtfulAccountsReceivableChargeOffs	-22000	USD
CY2012Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	6718000	USD
CY2012Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	2328000	USD
CY2012Q4	uslm	Inventory Raw Materials And Finished Goods Net Of Reserves InventoryRawMaterialsAndFinishedGoodsNetOfReserves	9046000	USD
CY2012Q4	us-gaap	Other Inventory Net Of Reserves OtherInventoryNetOfReserves	5081000	USD
CY2011Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	3540000	USD
CY2011Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	2107000	USD
CY2011Q4	uslm	Inventory Raw Materials And Finished Goods Net Of Reserves InventoryRawMaterialsAndFinishedGoodsNetOfReserves	5647000	USD
CY2011Q4	us-gaap	Other Inventory Net Of Reserves OtherInventoryNetOfReserves	5117000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1453000	USD
CY2011Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1560000	USD
CY2012Q4	uslm	Asset Retirement Obligation Assets Not Fully Depreciated AssetRetirementObligationAssetsNotFullyDepreciated	404000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	51000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	55000	USD
CY2011Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	181000	USD
CY2011Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	114000	USD
CY2011Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	7000	USD
CY2012Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	136000	USD
CY2012Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	109000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	22000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	128000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	946000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	939000	USD
CY2012	us-gaap	Environmental Costs Recognized Capitalized In Period EnvironmentalCostsRecognizedCapitalizedInPeriod	428000	USD
CY2011	us-gaap	Environmental Costs Recognized Capitalized In Period EnvironmentalCostsRecognizedCapitalizedInPeriod	407000	USD
CY2010	us-gaap	Environmental Costs Recognized Capitalized In Period EnvironmentalCostsRecognizedCapitalizedInPeriod	787000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5705475	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6343992	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6400958	shares
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	10286	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	18449	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	650000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Number Of Shares Per Employee ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesPerEmployee	100000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	113318	shares
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1082000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	848000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	737000	USD
CY2012	uslm	Debt Instrument Amendment Fee DebtInstrumentAmendmentFee	100000	USD
CY2012	uslm	Debt Instrument Cash Flow Leverage Ratio DebtInstrumentCashFlowLeverageRatio	3.25	pure
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	26667000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	32917000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	5000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	5000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	16667000	USD
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	31883000	USD
CY2012Q2	us-gaap	Oil And Gas Revenue OilAndGasRevenue	1769000	USD
CY2012Q3	us-gaap	Oil And Gas Revenue OilAndGasRevenue	1558000	USD
CY2012Q4	us-gaap	Oil And Gas Revenue OilAndGasRevenue	1671000	USD
CY2011Q1	us-gaap	Oil And Gas Revenue OilAndGasRevenue	2864000	USD
CY2011Q2	us-gaap	Oil And Gas Revenue OilAndGasRevenue	3458000	USD
CY2012Q1	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	7951000	USD
CY2012Q2	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	7324000	USD
CY2012Q3	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	6972000	USD
CY2012Q4	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	7252000	USD
CY2012Q1	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	1252000	USD
CY2012Q2	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	1029000	USD
CY2012Q3	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	787000	USD
CY2012Q4	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	871000	USD
CY2012Q4	us-gaap	Gross Profit GrossProfit	8123000	USD
CY2012Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3792000	USD
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2011Q4	us-gaap	Sales Revenue Net SalesRevenueNet	33494000	USD
CY2011Q1	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	7539000	USD
CY2011Q2	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	7814000	USD
CY2011Q3	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	10092000	USD
CY2011Q4	uslm	Gross Profit Lime And Limestone Operations GrossProfitLimeAndLimestoneOperations	6696000	USD
CY2011Q1	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	1873000	USD
CY2011Q2	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	2585000	USD
CY2011Q3	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	2447000	USD
CY2011Q4	uslm	Gross Profit Natural Gas Interests GrossProfitNaturalGasInterests	2302000	USD
CY2011Q4	us-gaap	Gross Profit GrossProfit	8998000	USD
CY2011Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4515000	USD
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.73
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.72
CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	9328000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-30000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	149000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-64000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	17000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-85000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	36000	USD
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	-182000	USD
CY2011	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	89000	USD
CY2012	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	312000	USD
CY2012Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	18085000	USD
CY2011Q4	us-gaap	Mineral Properties Gross MineralPropertiesGross	17001000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	18353000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	17199000	USD
CY2012	us-gaap	Revenue Mineral Sales RevenueMineralSales	131404000	USD
CY2011	us-gaap	Revenue Mineral Sales RevenueMineralSales	129704000	USD
CY2010	us-gaap	Revenue Mineral Sales RevenueMineralSales	125169000	USD
CY2012Q1	us-gaap	Revenue Mineral Sales RevenueMineralSales	33905000	USD
CY2012Q2	us-gaap	Revenue Mineral Sales RevenueMineralSales	34729000	USD
CY2012Q3	us-gaap	Revenue Mineral Sales RevenueMineralSales	32558000	USD
CY2012Q4	us-gaap	Revenue Mineral Sales RevenueMineralSales	30212000	USD
CY2011Q1	us-gaap	Revenue Mineral Sales RevenueMineralSales	30202000	USD
CY2011Q2	us-gaap	Revenue Mineral Sales RevenueMineralSales	33382000	USD
CY2011Q3	us-gaap	Revenue Mineral Sales RevenueMineralSales	35658000	USD
CY2011Q4	us-gaap	Revenue Mineral Sales RevenueMineralSales	30462000	USD
CY2012	us-gaap	Oil And Gas Revenue OilAndGasRevenue	7121000	USD
CY2011	us-gaap	Oil And Gas Revenue OilAndGasRevenue	12878000	USD
CY2010	us-gaap	Oil And Gas Revenue OilAndGasRevenue	7425000	USD
CY2012Q1	us-gaap	Oil And Gas Revenue OilAndGasRevenue	2123000	USD
CY2011Q3	us-gaap	Oil And Gas Revenue OilAndGasRevenue	3524000	USD
CY2011Q4	us-gaap	Oil And Gas Revenue OilAndGasRevenue	3032000	USD
CY2012	us-gaap	Costs Of Metals Sold CostsOfMetalsSold	88346000	USD
CY2011	us-gaap	Costs Of Metals Sold CostsOfMetalsSold	85367000	USD
CY2010	us-gaap	Costs Of Metals Sold CostsOfMetalsSold	81825000	USD
CY2012	us-gaap	Cost Of Goods Sold Depreciation Depletion And Amortization CostOfGoodsSoldDepreciationDepletionAndAmortization	14850000	USD
CY2011	us-gaap	Cost Of Goods Sold Depreciation Depletion And Amortization CostOfGoodsSoldDepreciationDepletionAndAmortization	13597000	USD
CY2010	us-gaap	Cost Of Goods Sold Depreciation Depletion And Amortization CostOfGoodsSoldDepreciationDepletionAndAmortization	13307000	USD
CY2012	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	2131000	USD
CY2011	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	3654000	USD
CY2010	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	3090000	USD
CY2012	us-gaap	Shipping And Handling Revenue ShippingAndHandlingRevenue	26675000	USD
CY2011	us-gaap	Shipping And Handling Revenue ShippingAndHandlingRevenue	26470000	USD
CY2010	us-gaap	Shipping And Handling Revenue ShippingAndHandlingRevenue	25756000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	193000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	124000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1397000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1540000	USD
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense	75000	USD
CY2011Q4	uslm	Prior Period Reclassification Adjustment Amount PriorPeriodReclassificationAdjustmentAmount	515000	USD
CY2012Q4	uslm	Current Income Taxes Accrued Expenses CurrentIncomeTaxesAccruedExpenses	307000	USD
CY2011Q4	uslm	Current Income Taxes Prepaid Expenses And Other Current Assets CurrentIncomeTaxesPrepaidExpensesAndOtherCurrentAssets	241000	USD
CY2012Q4	uslm	Deferred Income Taxes Prepaid Expenses And Other Current Assets DeferredIncomeTaxesPrepaidExpensesAndOtherCurrentAssets	678000	USD
CY2011Q4	uslm	Deferred Income Taxes Prepaid Expenses And Other Current Assets DeferredIncomeTaxesPrepaidExpensesAndOtherCurrentAssets	515000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000	pure
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	12497000	USD

Files In Submission

Name	View Source	Status
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
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uslm-20121231.xml	Edgar Link	completed
uslm-20121231.xsd	Edgar Link	pending
uslm-20121231_cal.xml	Edgar Link	unprocessable
uslm-20121231_def.xml	Edgar Link	unprocessable
uslm-20121231_lab.xml	Edgar Link	unprocessable
uslm-20121231_pre.xml	Edgar Link	unprocessable

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$USLM
UNITED STATES LIME & MINERALS INC Stock $uslm

2011 Q4 Form 10-K Financial Statement

#000104746913002339 Filed on March 07, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$USLM UNITED STATES LIME & MINERALS INC Stock $uslm

2011 Q4 Form 10-K Financial Statement

#000104746913002339 Filed on March 07, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$USLM
UNITED STATES LIME & MINERALS INC Stock $uslm