Summary of Significant Accounting Policies	12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Principles of Consolidation — The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and include the accounts and transactions of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current year presentation. Revenue Recognition — Net sales includes product sales and billings for freight and handling charges. Sales and associated cost of goods sold are generally recognized when products are shipped and title passes to customers. We accrue for returns based on historical evidence of rates of return. Shipping and Handling Fees and Costs — Shipping and handling fees charged to customers totaled $10.7 million, $12.8 million and $13.0 million in 2012, 2011 and 2010, respectively, and are included in the caption Net sales on the Consolidated Statements of Operations and Comprehensive Income (Loss). Costs related to shipping and handling fees of $13.6 million, $13.1 million and $11.0 million in 2012, 2011 and 2010, respectively, are included in Cost of goods sold. Cash Equivalents — The Company considers all highly liquid investments with a maturity of three months or less when purchased, such as money market funds, to be cash equivalents. Allowance for Doubtful Accounts — The Company evaluates the collectability of accounts receivable based on a combination of factors. In circumstances where the Company is aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filings, substantial down-grading of credit ratings), a specific reserve for bad debts is recorded against amounts due to reduce the receivable to the amount the Company reasonably believes will be collected. For all other customers, the Company recognizes reserves for bad debts based on the Company’s historical experience of bad debt write-offs as a percent of accounts receivable outstanding. If circumstances change (e.g., higher than expected defaults or an unexpected material adverse change in a major customer’s ability to meet its financial obligations), the estimates of the recoverability of amounts due the Company could be revised by a material amount. Inventories — Inventories principally consist of finished goods and some raw materials and work in process related to the manufacturing process at Automatic Screw Machine Products Company ("ASMP"). Inventories are stated at the lower of cost (first-in-first-out method) or market. To reduce inventory to a lower of cost or market value, a reserve is recorded for slow-moving and obsolete inventory based on historical experience and monitoring current inventory activity. Estimates are used to determine the necessity of recording these reserves based on periodic detailed analysis using both qualitative and quantitative factors. As part of this analysis, the Company considers several factors including the inventories length of time on hand, historical sales, product shelf life, product life cycle, product classification and product obsolescence. It is the Company’s policy to not re-value inventory to the original cost basis subsequent to establishing a new cost basis. Inventories that are not considered ready for sale are classified as either raw materials or work in process. All MRO inventory is considered to be in a state ready for sale and classified as finished goods. Property, Plant and Equipment — Property, plant and equipment are stated at cost less accumulated depreciation and amortization. Depreciation expense is computed by the straight-line method for buildings and improvements generally using useful lives of 20 to 30 years and using the straight-line and double declining balance methods for machinery and equipment, furniture and fixtures and vehicles using useful lives of 3 to 10 years. Amortization of financing and capital leases is included in depreciation expense. Depreciation expense was $4.3 million, $3.9 million and $3.7 million for 2012, 2011 and 2010, respectively. Capitalized software is amortized over estimated useful lives of 3 to 5 years using the straight-line method. Amortization expense of capitalized software was $2.7 million, $1.7 million and $2.6 million for 2012, 2011 and 2010, respectively. Cash Value of Life Insurance — The Company has invested funds in life insurance policies on certain current and former executives. The cash surrender value of the policies is invested in various investment instruments and is recorded as an asset on our financial statements. The Company records these funds at contractual value. The change in the cash surrender value of the life insurance policies, which is recorded as a component of Selling, general and administrative expenses, is the change in the policies' contractual values. Deferred Compensation — The Company’s Executive Deferral Plan (“Deferral Plan”) allows certain executives to defer payment of a portion of their earned compensation. The deferred compensation is recorded in an Account Balance, which is a bookkeeping entry made by the Company to measure the amount due to the participant. The Account Balance is equal to the participant’s deferred compensation, adjusted for increases and/or decreases in the amount that the participant has designated to one or more bookkeeping portfolios that track the performance of certain mutual funds. Lawson adjusts the deferred compensation liability to equal the contractual value of the participants’ Account Balances. These adjustments are the changes in contractual value of the individual plans and are recorded as a component of Selling, general and administrative expenses. Stock-Based Compensation — Compensation based on the share value of the Company’s common stock is valued at its fair value at the grant date and the expense is recognized over the vesting period. Fair value is re-measured each reporting period for liability classified awards that may be redeemable in cash. See Note 13 - Stock Compensation Plans. Goodwill — Goodwill represents the cost of business acquisitions in excess of the fair value of identifiable net tangible and intangible assets acquired. Goodwill is allocated to the appropriate reporting unit as reviewed by the Company’s chief operating decision maker responsible for reviewing operating performance and allocating resources. Impairment of goodwill is evaluated using a three-step process. First, we look at qualitative factors to determine whether events or circumstances exist that would lead us to a determine that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If events or circumstances do exist that lead us to determine that it is more likely than not that the fair value of a reporting unit is less than its carrying value, then the fair value of the reporting unit is compared with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered impaired, and thus, the third step of the impairment test is unnecessary. If the carrying amount of the reporting unit exceeds its fair value, the third step of the goodwill impairment test is performed to measure the amount of impairment loss, if any. In the second quarter of 2012, we identified indicators of impairment related to operating losses and reduced market capitalization and, therefore, performed an interim impairment test of goodwill. We then estimated the fair value of our MRO reporting unit using a discounted cash flow analysis based on our current internal operating forecast to determine the reporting unit’s fair value. After completing the analysis, we concluded that the entire amount of the goodwill was impaired and a non-cash charge of $28.3 million was recorded. Impairment of Long-Lived Assets — The Company reviews its long-lived assets, including property, plant and equipment and intangibles, for impairment whenever events or changes in circumstances indicate that the carrying amounts of these assets may not be recoverable. Recoverability is measured by a comparison of the assets' carrying amount to their expected future undiscounted net cash flows. If such assets are considered to be impaired, the impairment to be recognized is measured based on the amount by which the carrying amount of the asset exceeds its fair value. Income Taxes — Deferred tax assets or liabilities reflect temporary differences between amounts of assets and liabilities for financial and tax reporting. Such amounts are adjusted, as appropriate, to reflect changes in enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance is established to offset any deferred tax assets if, based upon the available evidence, it is more likely than not (i.e. greater than 50% likely) that some or all of the deferred tax assets will not be realized. The determination of the amount of a valuation allowance to be provided on recorded deferred tax assets involves estimates regarding (1) the timing and amount of the reversal of taxable temporary differences, (2) expected future taxable income, (3) the impact of tax planning strategies and (4) the ability to carry back deferred tax assets to offset prior taxable income. In assessing the need for a valuation allowance, we consider all available positive and negative evidence, including past operating results, projections of future taxable income and the feasibility of ongoing tax planning strategies. The projections of future taxable income include a number of estimates and assumptions regarding our volume, pricing and costs. Additionally, valuation allowances related to deferred tax assets can be impacted by changes to tax laws. Significant judgment is required in determining income tax provisions as well as deferred tax asset and liability balances, including the estimation of valuation allowances and the evaluation of tax positions. Primarily due to the cumulative losses the Company recorded over the past several quarters, Management determined that it was more likely than not that it would not be able to utilize deferred tax assets to offset future taxable income and increased the deferred tax valuation allowance to equal substantially all of the Company's net tax assets. Therefore, substantially all future taxable income will be subject to this tax valuation allowance until the Company can establish that the recoverability of its deferred tax assets is more certain. Earnings from the Company's foreign subsidiaries are considered to be indefinitely reinvested. A distribution of these non-U.S. earnings in the form of dividends or otherwise would subject the Company to both U.S. Federal and state income taxes, as adjusted for tax credits and foreign withholding taxes. The Company recognizes the benefit of tax positions when a benefit is more likely than not (i.e., greater than 50% likely) to be sustained on its technical merits. Recognized tax benefits are measured at the largest amount that is more likely than not to be sustained, based on cumulative probability, in final settlement of the position. The Company recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense. Leases — Leases are categorized as either operating or capital leases at inception. Operating lease costs are recognized on a straight-line basis over the term of the lease. An asset and a corresponding liability for the capital lease obligation are established for the cost of capital leases. The capital lease obligation is amortized over the life of the lease. For build-to-suit leases, the Company establishes an asset and liability for the estimated construction costs incurred to the extent that it is involved in the construction of structural improvements or takes construction risk prior to the commencement of the lease. Upon occupancy of facilities under build-to-suit leases, the Company assesses whether these arrangements qualify for sales recognition under the sale-leaseback accounting guidance. If a lease does not meet the criteria to qualify for a sale-leaseback transaction, the established asset and liability remain on the Company's balance sheet. This asset is depreciated over the life of the lease and the liability is reduced by the non-interest portion of the lease payments. Earnings per Share — Basic earnings per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflect the potential dilution from the exercise or conversion of outstanding stock options and restricted stock awards into common stock. Foreign Currency — The accounts of foreign subsidiaries are measured using the local currency as the functional currency. All balance sheet amounts have been translated into U.S. dollars using the exchange rates in effect at the applicable period end. Income statement amounts have been translated using the average exchange rate for the applicable period. The gains and losses resulting from the changes in exchange rates from the translation of subsidiary accounts in local currency to U.S. dollars have been reported as a component of Accumulated other comprehensive income in the Consolidated Balance Sheets. Foreign currency transaction gains and losses result from the effect of exchange rate changes on transactions denominated in currencies other than the functional currency. These gains and losses are included in the Consolidated Statements of Operations and Comprehensive Income (Loss) and were immaterial for all years presented. Treasury Stock —The Company repurchased 2,474, 3,759 and 2,703 shares of its common stock in 2012, 2011 and 2010, respectively, from employees upon the vesting of restricted stock to offset the income taxes owed by those employees. The Company accounts for treasury stock using the cost method and includes treasury stock as a component of stockholders’ equity. Use of Estimates — Preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from these estimates. Recent Accounting Pronouncements In June 2011, and as amended in December 2011, the FASB issued Accounting Standards Update (“ASU”) No. 2011-05, an amendment to ASC 220, Comprehensive Income. This ASU eliminates the option to present components of other comprehensive income as part of the statement of equity and requires that the total of comprehensive income, the components of net income, and the components of other comprehensive income be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. It also requires presentation on the face of the financial statements of reclassification adjustments for items that are reclassified from other comprehensive income to net income in the statements where the components of net income and the components of other comprehensive income are presented. The amendments in this ASU are to be applied retrospectively. This update is effective for fiscal years and interim periods within those years beginning after December 15, 2011. In December 2011, the FASB issued ASU 2011-12, an amendment to certain pending paragraphs from ASU 2011-05. This amendment allowed for companies to defer the effective date of the change in presentation on the face of the financial statements of reclassification adjustments for items that are reclassified from other comprehensive income to net income in the statements where the components of net income and the components of other comprehensive income are presented until the FASB has further deliberated financial statement users need for this information. The effective date for all other amendments put forth in ASU No. 2011-05 are unaffected by this update. This update is effective for fiscal years and interim periods within those years beginning after December 15, 2011. The Company adopted ASU 2011-05 as amended by ASU 2011-12 beginning on January 1, 2012. Subsequent Events — The Company has evaluated events through the issue date of this Form 10-K and has determined that no reportable events have occurred subsequent to the date of these financial statements.

Summary of Significant Accounting Policies

Principles of Consolidation — The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and include the accounts and transactions of the Company and its wholly-owned subsidiaries. All significant intercompany transactions and balances have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current year presentation.

Revenue Recognition — Net sales includes product sales and billings for freight and handling charges. Sales and associated cost of goods sold are generally recognized when products are shipped and title passes to customers. We accrue for returns based on historical evidence of rates of return.

Shipping and Handling Fees and Costs — Shipping and handling fees charged to customers totaled $10.7 million, $12.8 million and $13.0 million in 2012, 2011 and 2010, respectively, and are included in the caption Net sales on the Consolidated Statements of Operations and Comprehensive Income (Loss). Costs related to shipping and handling fees of $13.6 million, $13.1 million and $11.0 million in 2012, 2011 and 2010, respectively, are included in Cost of goods sold.

Cash Equivalents — The Company considers all highly liquid investments with a maturity of three months or less when purchased, such as money market funds, to be cash equivalents.

Allowance for Doubtful Accounts — The Company evaluates the collectability of accounts receivable based on a combination of factors. In circumstances where the Company is aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filings, substantial down-grading of credit ratings), a specific reserve for bad debts is recorded against amounts due to reduce the receivable to the amount the Company reasonably believes will be collected. For all other customers, the Company recognizes reserves for bad debts based on the Company’s historical experience of bad debt write-offs as a percent of accounts receivable outstanding. If circumstances change (e.g., higher than expected defaults or an unexpected material adverse change in a major customer’s ability to meet its financial obligations), the estimates of the recoverability of amounts due the Company could be revised by a material amount.

Inventories — Inventories principally consist of finished goods and some raw materials and work in process related to the manufacturing process at Automatic Screw Machine Products Company ("ASMP"). Inventories are stated at the lower of cost (first-in-first-out method) or market. To reduce inventory to a lower of cost or market value, a reserve is recorded for slow-moving and obsolete inventory based on historical experience and monitoring current inventory activity. Estimates are used to determine the necessity of recording these reserves based on periodic detailed analysis using both qualitative and quantitative factors. As part of this analysis, the Company considers several factors including the inventories length of time on hand, historical sales, product shelf life, product life cycle, product classification and product obsolescence. It is the Company’s policy to not re-value inventory to the original cost basis subsequent to establishing a new cost basis.

Inventories that are not considered ready for sale are classified as either raw materials or work in process. All MRO inventory is considered to be in a state ready for sale and classified as finished goods.

Property, Plant and Equipment — Property, plant and equipment are stated at cost less accumulated depreciation and amortization. Depreciation expense is computed by the straight-line method for buildings and improvements generally using useful lives of 20 to 30 years and using the straight-line and double declining balance methods for machinery and equipment, furniture and fixtures and vehicles using useful lives of 3 to 10 years. Amortization of financing and capital leases is included in depreciation expense. Depreciation expense was $4.3 million, $3.9 million and $3.7 million for 2012, 2011 and 2010, respectively. Capitalized software is amortized over estimated useful lives of 3 to 5 years using the straight-line method. Amortization expense of capitalized software was $2.7 million, $1.7 million and $2.6 million for 2012, 2011 and 2010, respectively.

Cash Value of Life Insurance — The Company has invested funds in life insurance policies on certain current and former executives. The cash surrender value of the policies is invested in various investment instruments and is recorded as an asset on our financial statements. The Company records these funds at contractual value. The change in the cash surrender value of the life insurance policies, which is recorded as a component of Selling, general and administrative expenses, is the change in the policies' contractual values.

Deferred Compensation — The Company’s Executive Deferral Plan (“Deferral Plan”) allows certain executives to defer payment of a portion of their earned compensation. The deferred compensation is recorded in an Account Balance, which is a bookkeeping entry made by the Company to measure the amount due to the participant. The Account Balance is equal to the participant’s deferred compensation, adjusted for increases and/or decreases in the amount that the participant has designated to one or more bookkeeping portfolios that track the performance of certain mutual funds. Lawson adjusts the deferred compensation liability to equal the contractual value of the participants’ Account Balances. These adjustments are the changes in contractual value of the individual plans and are recorded as a component of Selling, general and administrative expenses.

Stock-Based Compensation — Compensation based on the share value of the Company’s common stock is valued at its fair value at the grant date and the expense is recognized over the vesting period. Fair value is re-measured each reporting period for liability classified awards that may be redeemable in cash. See Note 13 - Stock Compensation Plans.

Goodwill — Goodwill represents the cost of business acquisitions in excess of the fair value of identifiable net tangible and intangible assets acquired. Goodwill is allocated to the appropriate reporting unit as reviewed by the Company’s chief operating decision maker responsible for reviewing operating performance and allocating resources. Impairment of goodwill is evaluated using a three-step process. First, we look at qualitative factors to determine whether events or circumstances exist that would lead us to a determine that it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If events or circumstances do exist that lead us to determine that it is more likely than not that the fair value of a reporting unit is less than its carrying value, then the fair value of the reporting unit is compared with its carrying amount, including goodwill. If the fair value of the reporting unit exceeds its carrying amount, goodwill of the reporting unit is not considered impaired, and thus, the third step of the impairment test is unnecessary. If the carrying amount of the reporting unit exceeds its fair value, the third step of the goodwill impairment test is performed to measure the amount of impairment loss, if any.

In the second quarter of 2012, we identified indicators of impairment related to operating losses and reduced market capitalization and, therefore, performed an interim impairment test of goodwill. We then estimated the fair value of our MRO reporting unit using a discounted cash flow analysis based on our current internal operating forecast to determine the reporting unit’s fair value. After completing the analysis, we concluded that the entire amount of the goodwill was impaired and a non-cash charge of $28.3 million was recorded.

Impairment of Long-Lived Assets — The Company reviews its long-lived assets, including property, plant and equipment and intangibles, for impairment whenever events or changes in circumstances indicate that the carrying amounts of these assets may not be recoverable. Recoverability is measured by a comparison of the assets' carrying amount to their expected future undiscounted net cash flows. If such assets are considered to be impaired, the impairment to be recognized is measured based on the amount by which the carrying amount of the asset exceeds its fair value.

Income Taxes — Deferred tax assets or liabilities reflect temporary differences between amounts of assets and liabilities for financial and tax reporting. Such amounts are adjusted, as appropriate, to reflect changes in enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance is established to offset any deferred tax assets if, based upon the available evidence, it is more likely than not (i.e. greater than 50% likely) that some or all of the deferred tax assets will not be realized. The determination of the amount of a valuation allowance to be provided on recorded deferred tax assets involves estimates regarding (1) the timing and amount of the reversal of taxable temporary differences, (2) expected future taxable income, (3) the impact of tax planning strategies and (4) the ability to carry back deferred tax assets to offset prior taxable income. In assessing the need for a valuation allowance, we consider all available positive and negative evidence, including past operating results, projections of future taxable income and the feasibility of ongoing tax planning strategies. The projections of future taxable income include a number of estimates and assumptions regarding our volume, pricing and costs. Additionally, valuation allowances related to deferred tax assets can be impacted by changes to tax laws. Significant judgment is required in determining income tax provisions as well as deferred tax asset and liability balances, including the estimation of valuation allowances and the evaluation of tax positions.

Primarily due to the cumulative losses the Company recorded over the past several quarters, Management determined that it was more likely than not that it would not be able to utilize deferred tax assets to offset future taxable income and increased the deferred tax valuation allowance to equal substantially all of the Company's net tax assets. Therefore, substantially all future taxable income will be subject to this tax valuation allowance until the Company can establish that the recoverability of its deferred tax assets is more certain.

Earnings from the Company's foreign subsidiaries are considered to be indefinitely reinvested. A distribution of these non-U.S. earnings in the form of dividends or otherwise would subject the Company to both U.S. Federal and state income taxes, as adjusted for tax credits and foreign withholding taxes.

The Company recognizes the benefit of tax positions when a benefit is more likely than not (i.e., greater than 50% likely) to be sustained on its technical merits. Recognized tax benefits are measured at the largest amount that is more likely than not to be sustained, based on cumulative probability, in final settlement of the position. The Company recognizes interest and penalties related to unrecognized tax benefits as a component of income tax expense.

Leases — Leases are categorized as either operating or capital leases at inception. Operating lease costs are recognized on a straight-line basis over the term of the lease. An asset and a corresponding liability for the capital lease obligation are established for the cost of capital leases. The capital lease obligation is amortized over the life of the lease. For build-to-suit leases, the Company establishes an asset and liability for the estimated construction costs incurred to the extent that it is involved in the construction of structural improvements or takes construction risk prior to the commencement of the lease. Upon occupancy of facilities under build-to-suit leases, the Company assesses whether these arrangements qualify for sales recognition under the sale-leaseback accounting guidance. If a lease does not meet the criteria to qualify for a sale-leaseback transaction, the established asset and liability remain on the Company's balance sheet. This asset is depreciated over the life of the lease and the liability is reduced by the non-interest portion of the lease payments.

Earnings per Share — Basic earnings per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflect the potential dilution from the exercise or conversion of outstanding stock options and restricted stock awards into common stock.

Foreign Currency — The accounts of foreign subsidiaries are measured using the local currency as the functional currency. All balance sheet amounts have been translated into U.S. dollars using the exchange rates in effect at the applicable period end. Income statement amounts have been translated using the average exchange rate for the applicable period. The gains and losses resulting from the changes in exchange rates from the translation of subsidiary accounts in local currency to U.S. dollars have been reported as a component of Accumulated other comprehensive income in the Consolidated Balance Sheets. Foreign currency transaction gains and losses result from the effect of exchange rate changes on transactions denominated in currencies other than the functional currency. These gains and losses are included in the Consolidated Statements of Operations and Comprehensive Income (Loss) and were immaterial for all years presented.

Treasury Stock —The Company repurchased 2,474, 3,759 and 2,703 shares of its common stock in 2012, 2011 and 2010, respectively, from employees upon the vesting of restricted stock to offset the income taxes owed by those employees. The Company accounts for treasury stock using the cost method and includes treasury stock as a component of stockholders’ equity.

Use of Estimates — Preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from these estimates.

Recent Accounting Pronouncements

In June 2011, and as amended in December 2011, the FASB issued Accounting Standards Update (“ASU”) No. 2011-05, an amendment to ASC 220, Comprehensive Income. This ASU eliminates the option to present components of other comprehensive income as part of the statement of equity and requires that the total of comprehensive income, the components of net income, and the components of other comprehensive income be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. It also requires presentation on the face of the financial statements of reclassification adjustments for items that are reclassified from other comprehensive income to net income in the statements where the components of net income and the components of other comprehensive income are presented. The amendments in this ASU are to be applied retrospectively. This update is effective for fiscal years and interim periods within those years beginning after December 15, 2011.

In December 2011, the FASB issued ASU 2011-12, an amendment to certain pending paragraphs from ASU 2011-05. This amendment allowed for companies to defer the effective date of the change in presentation on the face of the financial statements of reclassification adjustments for items that are reclassified from other comprehensive income to net income in the statements where the components of net income and the components of other comprehensive income are presented until the FASB has further deliberated financial statement users need for this information. The effective date for all other amendments put forth in ASU No. 2011-05 are unaffected by this update. This update is effective for fiscal years and interim periods within those years beginning after December 15, 2011.

The Company adopted ASU 2011-05 as amended by ASU 2011-12 beginning on January 1, 2012.

Subsequent Events — The Company has evaluated events through the issue date of this Form 10-K and has determined that no reportable events have occurred subsequent to the date of these financial statements.