LMI Aerospace (LMIA) 10-Q 9 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	May. 02, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	LMI AEROSPACE INC
Entity Central Index Key	1,059,562
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		13,476,865
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,439	$ 10,504
Accounts receivable, net	54,953	48,491
Inventories	119,359	114,775
Prepaid expenses and other current assets	4,665	4,147
Total current assets	180,416	177,917
Property, plant and equipment, net	98,281	100,969
Goodwill	86,784	86,784
Intangible assets, net	45,546	46,582
Other assets	3,484	3,728
Total assets	414,511	415,980
Current liabilities:
Accounts payable	19,855	13,156
Accrued expenses	21,842	30,015
Current installments of long-term debt and capital lease obligations	2,352	2,362
Total current liabilities	44,049	45,533
Long-term liabilities:
Long-term debt and capital lease obligations, less current installments	248,561	247,633
Other long-term liabilities	3,575	4,322
Deferred income taxes	516	536
Total long-term liabilities	252,652	252,491
Shareholders’ equity:
Common stock, $0.02 par value per share; authorized 28,000,000 shares; issued 13,471,377 and 13,287,688 shares at March 31, 2016 and December 31, 2015, respectively	269	266
Preferred stock, $0.02 par value per share; authorized 2,000,000 shares; none issued at either date	0	0
Additional paid-in capital	98,827	97,617
Accumulated other comprehensive loss	(225)	(211)
Treasury stock, at cost, 419 and 39,419 shares at March 31, 2016 and December 31, 2015, respectively	(4)	(418)
Retained earnings	18,943	20,702
Total shareholders’ equity	117,810	117,956
Total liabilities and shareholders' equity	$ 414,511	$ 415,980

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Shareholders’ equity:
Common stock, par value (in dollars per share)	$ 0.02	$ 0.02
Common stock, authorized shares (in shares)	28,000,000	28,000,000
Common stock, shares issued (in shares)	13,471,377	13,287,688
Preferred stock, par value (in dollars per share)	$ 0.02	$ 0.02
Preferred stock, authorized shares (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Treasury stock, at cost (in shares)	419	39,419

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Sales and service revenue
Product sales	$ 75,862	$ 78,457
Service revenue	11,469	14,018
Net sales	87,331	92,475
Cost of sales and service revenue
Cost of product sales	60,336	62,551
Cost of service revenue	10,765	12,727
Cost of sales	71,101	75,278
Gross profit	16,230	17,197
Selling, general and administrative expenses	11,853	12,609
Restructuring expense	947	275
Income from operations	3,430	4,313
Other (expense) income:
Interest expense	(5,263)	(5,591)
Other, net	(90)	122
Total other expense	(5,353)	(5,469)
Loss before income taxes	(1,923)	(1,156)
(Benefit) provision for income taxes	(164)	309
Net loss	(1,759)	(1,465)
Other comprehensive income (expense):
Change in foreign currency translation adjustment	(13)	(79)
Total comprehensive loss	$ (1,772)	$ (1,544)
Amounts per common share:
Net loss per common share	$ (0.14)	$ (0.11)
Net loss per common share assuming dilution	$ (0.14)	$ (0.11)
Weighted average common shares (in shares)	12,975,485	12,794,766
Weighted average dilutive common shares outstanding (in shares)	12,975,485	12,794,766

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net loss	$ (1,759)	$ (1,465)
Adjustments to reconcile net loss to net cash used by operating activities:
Depreciation and amortization	4,900	4,913
Amortization of debt issuance cost	478	489
Stock based compensation	345	586
Deferred taxes	0	87
Other non-cash items	(65)	(42)
Changes in operating assets and liabilities:
Accounts receivable	(6,475)	(2,736)
Inventories	(4,740)	(7,576)
Prepaid expenses and other assets	(387)	(540)
Current income taxes	(38)	208
Accounts payable	7,388	1,786
Accrued expenses	(6,891)	(4,986)
Net cash used by operating activities	(7,244)	(9,276)
Investing activities:
Additions to property, plant and equipment	(2,418)	(6,879)
Proceeds from sale of property, plant and equipment	6	0
Net cash used by investing activities	(2,412)	(6,879)
Financing activities:
Proceeds from issuance of debt	1,465	0
Principal payments on long-term debt and notes payable	(874)	(614)
Advances on revolving line of credit	2,000	36,000
Payments on revolving line of credit	(2,000)	(24,500)
Payments for debt issuance cost	0	(94)
Net cash provided by financing activities	591	10,792
Net decrease in cash and cash equivalents	(9,065)	(5,363)
Cash and cash equivalents, beginning of period	10,504	7,927
Cash and cash equivalents, end of period	1,439	2,564
Supplemental disclosure of noncash transactions:
Defined contribution plan funding in Company stock	$ 1,472	$ 710

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, all recurring adjustments considered necessary for a fair statement have been included. Operating results for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 . These financial statements should be read in conjunction with the consolidated financial statements and accompanying footnotes included in the Annual Report on Form 10-K, as amended, of LMI Aerospace, Inc. (the "Company”) for the year ended December 31, 2015 , as filed with the Securities and Exchange Commission on March 17, 2016. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts in the financial statements and accompanying notes. Actual results could differ from these estimates. Recent Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606). On July 9, 2015 the FASB voted to approve a one year delay of the effective date and to permit companies to voluntarily adopt the new standard as of the original effective date. The new standard is effective for reporting periods beginning after December 15, 2017. The standard will supersede existing revenue recognition guidance, including industry-specific guidance, and will provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The standard requires revenue to be recognized when promised goods or services are transferred to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. Adoption of the new rules could affect the timing of revenue recognition for certain transactions. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. The provisions of this new guidance are effective as of the beginning of the Company’s first quarter of 2018. The Company is currently evaluating the transition method to be used and the impact of adoption of this standard on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, "Leases." The standard requires lessees to recognize a lease liability and a lease asset for all leases, including operating leases, with a term greater than 12 months on its balance sheet. The update also expands the required quantitative and qualitative disclosures surrounding leases. The provisions of this new guidance are effective as of the beginning of the Company’s first quarter of 2019. This update will be applied using a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently evaluating the effect of this update on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which amends Accounting Standards Codification (“ASC”) Topic 718, Compensation – Stock Compensation. The standard simplifies the accounting for stock-based compensation, including amendments on how both taxes related to stock-based compensation and cash payments made to taxing authorities are recorded. These amendments are expected to impact net income, earnings per share and the consolidated statement of cash flows. The new guidance is effective for financial statements issued for annual reporting periods beginning after December 15, 2016, and early application is permitted, during fiscal 2016, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of this standard on its consolidated financial statements. All other issued but not yet effective accounting pronouncements are not expected to have a material impact on our Condensed Consolidated Financial Statements.

Accounts Receivable, Net

Accounts Receivable, Net	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Accounts Receivable, Net	Accounts Receivable, Net Accounts receivable, net consists of the following: March 31, 2016 December 31, 2015 Trade receivables $ 48,675 $ 42,307 Unbilled revenue 4,879 4,869 Other receivables 1,640 1,561 55,194 48,737 Less: Allowance for doubtful accounts (241 ) (246 ) Accounts receivable, net $ 54,953 $ 48,491 Under contract accounting, unbilled revenues arise when the sales or revenues based on performance attainment, though appropriately recognized, cannot be billed yet under terms of the contract as of the balance sheet date. Included in unbilled revenue at March 31, 2016 and December 31, 2015 are $859 and $858 , respectively, related to unpriced change orders or claims that are subject to negotiation. The final resolution of these unpriced items could result in either a favorable or unfavorable change in the revenue recognized to date on the associated contracts. Accounts receivable expected to be collected after one year is not material. The Company records changes in contract estimates using the cumulative catch-up method in accordance with the Revenue Recognition topic of the FASB Accounting Standards Codification. Cumulative catch-up adjustments had the following impacts to operating income for the periods presented: Three Months Ended March 31, 2016 2015 Favorable adjustments $ 83 $ 412 Unfavorable adjustments (168 ) (36 ) Net (unfavorable) favorable operating income adjustments $ (85 ) $ 376 At both March 31, 2016 and December 31, 2015, the Company had recognized a loss reserve of $1,992 on the Mitsubishi Regional Jet design build program. The adjustment in 2015 related to this program was recorded as a reduction to revenue in the Consolidated Statements of Comprehensive Income (Loss).

Inventories

Inventories	3 Months Ended
	Mar. 31, 2016
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consist of the following: March 31, 2016 December 31, 2015 Raw materials $ 14,044 $ 12,513 Work in progress 24,699 22,681 Manufactured and purchased components 19,615 19,224 Finished goods 28,359 28,169 Product inventory 86,717 82,587 Capitalized contract costs 32,642 32,188 Total inventories $ 119,359 $ 114,775 Inventories include capitalized contract costs relating to programs and contracts with long-term production cycles. The Company believes these amounts will be fully recovered over the life of the contracts. In accordance with ASC 605-35-45-1&2, the provisions for anticipated losses on contracts are accounted for as additional contract cost and recognized as part of cost of sales. Provisions for losses are recorded as a reduction of related contract costs recorded in inventory. At March 31, 2016 and December 31, 2015, the Company had no contracts with loss reserves accounted for as a reduction of inventory. Capitalized contract costs at March 31, 2016 and December 31, 2015 include $5,821 and $5,970 respectively, related to an agreement the Company signed with Spirit Aerosystems ("Spirit") to form a strategically aligned partnership. This agreement extended the performance period of the statements of work for certain contracts with Spirit and gave the Company preferred supplier status on certain future contracts. This consideration is being amortized as a reduction to revenue over the life of the related contracts. The remaining capitalized contract costs relate primarily to four early-stage long-term contracts. The Company expects these costs will not be realized within one year but believes these amounts will be fully recovered over the life of the related contracts. The following table illustrates the market to which capitalized contract cost at March 31, 2016 and December 31, 2015 related: March 31, 2016 December 31, 2015 Large commercial aircraft $ 10,933 $ 11,528 Corporate and regional aircraft 17,786 16,721 Military 3,923 3,939 Total capitalized contract cost $ 32,642 $ 32,188

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The following table summarizes the net carrying amount of goodwill by segment at March 31, 2016 and December 31, 2015 , respectively: Engineering Aerostructures Services Total March 31, December 31, March 31, December 31, March 31, December 31, 2016 2015 2016 2015 2016 2015 Balance at: Gross Goodwill $ 141,953 $ 141,953 $ 50,741 $ 50,741 $ 192,694 $ 192,694 Accumulated impairment loss (79,471 ) (79,471 ) (26,439 ) (26,439 ) (105,910 ) (105,910 ) Net Goodwill $ 62,482 $ 62,482 $ 24,302 $ 24,302 $ 86,784 $ 86,784 The carrying value of goodwill is assessed annually, during the fourth quarter, unless a triggering event occurs. Following an assessment an impairment charge is recorded if appropriate. In the three months ended March 31, 2016 , a triggering event did not occur that would cause the Company to assess the carrying value of goodwill. Intangible Assets Intangible assets primarily consist of trademarks and customer intangibles. The carrying values were as follows: March 31, 2016 December 31, 2015 Trademarks $ 778 $ 778 Customer intangible assets 68,991 68,991 Other 1,274 1,274 Accumulated amortization (25,497 ) (24,461 ) Intangible assets, net $ 45,546 $ 46,582 Intangibles amortization expense was $1,036 and $1,089 for the three months ended March 31, 2016 and 2015 , respectively. The accumulated amortization balances at March 31, 2016 and December 31, 2015 , respectively, were $778 and $778 for trademarks, $23,813 and $22,816 for customer intangible assets, and $906 and $867 for other intangible assets. Intangible assets related to the acquisition of Valent are amortized on the straight-line method as this approximates the pattern of economic benefit of each intangible asset. All other remaining intangible assets are not material.

Long-term Debt and Capital Leas

Long-term Debt and Capital Lease Obligations	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Long-term Debt and Capital Lease Obligations	Long-term Debt and Capital Lease Obligations Long-term debt and capital lease obligations consist of the following: March 31, 2016 December 31, 2015 Second priority senior secured notes at a fixed rate of 7.375% at March 31, 2016 $ 234,175 $ 234,175 Missouri IRBs at fixed rate of 2.80% at March 31, 2016 and December 31, 2015 6,791 6,901 Capital leases, at fixed rates ranging from 3.00% to 4.50% and 3.00% to 7.73% at March 31, 2016 and December 31, 2015 12,521 11,708 Notes payable, principal and interest payable monthly, at fixed rates up to 2.56% at March 31, 2016 and December 31, 2015 1,639 1,750 Debt issuance cost (4,213 ) (4,539 ) Total debt $ 250,913 $ 249,995 Less current installments 2,352 2,362 Total long-term debt and capital lease obligations $ 248,561 $ 247,633 At March 31, 2016 , the Company had $234,175 in outstanding second-priority senior secured notes maturing on July 15, 2019. Obligations under these notes are secured by substantially all of the Company’s assets and bear interest at 7.375% , paid semi-annually in January and July. During the quarter ended March 31, 2016, the Company acquired equipment under capital lease of $1,465 . The Company's revolving credit agreement provides for a revolving credit facility of up to $90,000 . At both March 31, 2016 and December 31, 2015, the Company had no outstanding borrowings under the facility. Under the agreement, the co-collateral agents may establish a reserve against the facility. At March 31, 2016 , the reserve established was $15,000 , which reduced the maximum availability to $75,000 . Based on the amount of eligible assets at March 31, 2016 and outstanding letters of credit of $1,388 , available borrowings were further reduced to $51,863 . The maximum amount, less reserves, available for borrowing at levels below $30,000 is based on a sum of 45% of eligible receivables, 30% of eligible inventories and an additional amount of eligible equipment up to 20% of total borrowings under the facility. The maximum amount, less reserves, available for borrowing at levels above $30,000 is based on a sum of 75% of eligible receivables, 45% of eligible inventories and an additional amount of eligible equipment up to 20% of total borrowings under the facility. Borrowings under the facility are secured by a first lien on substantially all of the Company’s assets and bear interest at either the LIBOR rate plus a margin of 3.00% to 3.50% or the alternate base rate, which is the highest of the following plus a margin of 2.00% to 2.50% , respectively, with the applicable margins for the revolving credit facility subject to a grid based on the average availability ratio of the Company for the most recently completed quarter: • Prime rate, • Federal funds rate plus 0.5% , or, • The adjusted Eurodollar rate for an interest period of one month plus 1.0% . For the three months ended March 31, 2016 , the actual interest rate incurred for the revolving credit facility was 6.0% . The Company is required to pay a commitment fee of between 0.375% and 0.5% per annum on the unused portion of the revolving credit facility, depending on the average revolver usage during the period as compared to the total available borrowings under the facility. At March 31, 2016 , the commitment fee required was 0.5% . The revolving credit loan facility matures on the earlier of the fifth year anniversary date of July 15, 2019 or the date that is 91 days prior to the maturity date of the senior secured notes unless the notes are repaid, refinanced or otherwise satisfied in full. The maturity dates are subject to acceleration upon occurrence of an event of default. An event of default under the revolving credit agreement includes, among other things, failure to pay any material indebtedness, acceleration of payments by any lender prior to scheduled maturity, or judgments rendered against the Company requiring payments at or above certain levels. The credit agreement contains a covenant that requires us to comply with a maximum first priority debt to EBITDA ratio on a quarterly basis. In addition, the agreement also contains certain restrictive covenants that limit and in some circumstances prohibit our ability to, among other things, incur additional debt, sell, lease or transfer our assets, make investments, guarantee debt or obligations, create liens, and enter into certain merger, consolidation or other reorganization transactions. These restrictive covenants prohibit the Company from paying dividends. These restrictions could limit our ability to obtain future financing, make acquisitions or needed capital expenditures, withstand any current or future downturns in our business or the economy in general, conduct operations or otherwise take advantage of business opportunities that may arise, any of which could place us at a competitive disadvantage relative to our competitors that have less debt and are not subject to such restrictions. At March 31, 2016 , the Company was in compliance with all of its covenants and expects to be in compliance with its covenants in future periods. If the Company fails to meet any covenants in the credit agreement, the Company would not be in compliance with its credit agreement and the lenders would be entitled to exercise various rights, including causing the amounts outstanding under the revolving credit facility to become immediately due and payable.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share Basic net income per common share is based upon the weighted average number of common shares outstanding. Diluted net income per common share is based upon the weighted average number of common shares outstanding, including the dilutive effect of restricted stock, using the if-converted methods. The following table shows a reconciliation of the numerators and denominators used in calculating basic and diluted earnings per share. Three months ended March 31, 2016 2015 Numerators Net loss $ (1,759 ) $ (1,465 ) Denominators Weighted average common shares - basic 12,975,485 12,794,766 Dilutive effect of restricted stock — — Weighted average common shares - diluted 12,975,485 12,794,766 Basic loss per share $ (0.14 ) $ (0.11 ) Diluted loss per share $ (0.14 ) $ (0.11 ) For the three months ended March 31, 2016 and March 31, 2015 , 83,603 and 146,934 restricted shares, respectively, are not included in the calculation of diluted earnings per share, as their inclusion would have been anti-dilutive. These securities could be dilutive in future periods.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock-Based Compensation On July 7, 2005, the Company’s shareholders approved the LMI Aerospace, Inc. 2005 Long-term Incentive Plan (the “ 2005 Plan”). The 2005 Plan provided for the grant of non-qualified stock options, incentive stock options, shares of restricted stock, restricted stock units, stock appreciation rights, performance awards and other share-based grants and cash bonus awards to employees and directors. All share-based grants or awards were subject to a time-based vesting schedule. All outstanding share-based grants under the 2005 Plan are in the form of restricted stock. A summary of the activity for non-vested restricted stock awards under the 2005 Plan is presented below: Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Outstanding at January 1, 2016 253,434 $ 14.54 Granted — — Vested (52,615 ) 18.03 Forfeited (7,516 ) 14.16 Outstanding at March 31, 2016 193,303 $ 13.61 Common stock compensation expense related to restricted stock awards granted under the 2005 Plan was $161 and $492 for the three months ended March 31, 2016 and 2015 , respectively. Total unrecognized compensation costs related to non-vested, share-based awards granted or awarded under the 2005 Plan were $1,202 and $1,762 at March 31, 2016 and December 31, 2015 , respectively. These costs are expected to be recognized over a weighted average period of 1.6 years and 1.6 years , at March 31, 2016 and December 31, 2015 , respectively. As of July 7, 2015 the Company was no longer able to grant awards under the 2005 Plan. On June 24, 2015, the Company's shareholders approved the LMI Aerospace, Inc. 2015 Incentive Compensation Plan (the “2015 Plan”), which became effective on July 1, 2015. Under the 2015 Plan, the Company, through the Compensation Committee of the Board of Directors, may, at its discretion, grant stock options, restricted shares of common stock, and other various stock-based awards to directors, officers, employees and consultants. A total of 750,000 shares of the Company’s common stock have been reserved for issuance under the 2015 Plan. All outstanding share-based grants under the 2015 Plan are in the form of restricted stock. A summary of the activity for non-vested restricted stock awards under the 2015 Plan is presented below: Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Outstanding at January 1, 2016 61,801 $ 9.79 Granted 85,648 9.40 Vested — — Forfeited — — Outstanding at March 31, 2016 147,449 $ 9.56 Common stock compensation expense related to restricted stock awards granted under the 2015 Plan was $174 and $0 for the three months ended March 31, 2016 and 2015 , respectively. Total unrecognized compensation costs related to non-vested, share-based awards granted or awarded under the 2015 Plan were $934 and $303 at March 31, 2016 and December 31, 2015 , respectively. These costs are expected to be recognized over a weighted average period of 1.8 years and 0.5 years at March 31, 2016 and December 31, 2015, respectively.

Business Segment Information

Business Segment Information	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information The Company is organized into two reportable segments: the Aerostructures segment and the Engineering Services segment. Through its Aerostructures segment, the Company primarily fabricates, machines, finishes, integrates, assembles and kits formed close tolerance aluminum, specialty alloy and composite components and higher level assemblies for use by the aerospace and defense industries. It manufactures more than 40,000 products for integration into a variety of aircraft platforms manufactured by leading original equipment manufacturers and Tier 1 aerospace suppliers. Through its Engineering Services segment, the Company provides a complete range of design, engineering and program management services, supporting aircraft product lifecycles from conceptual design, analysis and certification through production support, fleet support and service life extensions via a complete turnkey engineering solution. Corporate assets, liabilities and expenses related to the Company's corporate offices, except for interest expense and income taxes, primarily support, and are recorded in, the Aerostructures segment. The table below presents information about reported segments on the same basis used internally to evaluate segment performance: Three months ended March 31, 2016 2015 Net sales: Aerostructures $ 76,954 $ 79,245 Engineering Services 11,059 13,504 Eliminations (682 ) (274 ) $ 87,331 $ 92,475 Income from operations: Aerostructures $ 3,465 $ 5,055 Engineering Services 191 (764 ) Eliminations (226 ) 22 $ 3,430 $ 4,313

Customer Concentration

Customer Concentration	3 Months Ended
	Mar. 31, 2016
Risks and Uncertainties [Abstract]
Customer Concentration	Customer Concentration Direct sales, through both of the Company’s business segments, to our largest customer, Spirit Aerosystems (“Spirit”), accounted for 36.6% and 35.0% of the Company’s total revenues for the three months ended March 31, 2016 and 2015 , respectively. Accounts receivable balances related to Spirit were 34.4% and 28.6% of the Company’s total accounts receivable balance at March 31, 2016 and December 31, 2015 , respectively. Direct sales, through both of the Company’s business segments, to our second largest customer, Gulfstream Aerospace Corporation, a General Dynamics company (“Gulfstream”), accounted for 11.5% and 14.0% of the Company’s total revenues for the three months ended March 31, 2016 and 2015 , respectively. Accounts receivable balances related to Gulfstream were 12.6% and 15.5% of the Company’s total accounts receivable balance at March 31, 2016 and December 31, 2015 , respectively. Direct sales, through both of the Company’s business segments, to our third largest customer, The Boeing Company, (“Boeing”), accounted for 10.9% and 9.5% of the Company’s total revenues for the three months ended March 31, 2016 and 2015 , respectively. Accounts receivable balances resulting from direct sales to Boeing were 8.0% and 10.2% of the Company’s total accounts receivable balance at March 31, 2016 and December 31, 2015 , respectively.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company records income tax expense or benefit each quarter based on its estimated full-year effective tax rate. An income tax benefit of $164 and income tax expense of $309 were recognized in the three months ended March 31, 2016 and March 31, 2015, respectively. The Company continues to carry a full valuation allowance on its net deferred tax assets, which totaled $14,641 at both March 31, 2016 and December 31, 2015.

Restructuring

Restructuring	3 Months Ended
	Mar. 31, 2016
Restructuring and Related Activities [Abstract]
Restructuring	Restructuring The Company committed to and implemented various restructuring plans in 2015 and 2016. Included in those plans were the relocation of the machining operations in St. Charles, Missouri to other facilities within the Company and the implementation of other employment separation activities as part of the Company's overall reorganization and cost reduction initiatives. The expense associated with these plans was reflected in the selling, general, and administrative section on a separate line of the Condensed Consolidated Statements of Comprehensive Income (Loss). The following table summarizes the incurred charges associated with these restructuring activities: Three months ended March 31, 2016 2015 St. Charles machine parts operations relocation $ — $ 171 Other employment separation activities 947 104 Total $ 947 $ 275 Expense incurred by segment: Aerostructures $ 947 $ 260 Engineering Services — 15 Total $ 947 $ 275 The restructuring activities with respect to the St. Charles plan were completed in the second quarter of 2015. Cash payments were made associated with restructuring plans of $235 and $328 in the three months ended March 31, 2016 and March 31, 2015 . The following table summarizes the Company's restructuring activities during the three months ended March 31, 2016 : Employee Severance Other Total Accrued restructuring balance as of December 31, 2015 $ 162 $ 93 $ 255 Accrual additions 947 — 947 Cash payments (204 ) (31 ) (235 ) Accrued restructuring balance as of March 31, 2016 $ 905 $ 62 $ 967 Accrued restructuring of $967 at March 31, 2016 is expected to be paid over the next four quarters.

Legal Contingencies

Legal Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Legal Contingencies	Legal Contingencies The Company has not been named as a defendant in a lawsuit that is outside the normal course of business. In accordance with generally accepted accounting principles, management discloses the amount or range of reasonably possible losses in a lawsuit in which the Company is a named defendant. In the opinion of management, after consulting with legal counsel, any losses resulting from lawsuits in the normal course of business should not have a material effect on the Company’s financial position, cash flows or results of operations.

Condensed Consolidating Financi

Condensed Consolidating Financial Statements	3 Months Ended
	Mar. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Statements	Condensed Consolidating Financial Statements LMI Aerospace, Inc. excluding its subsidiaries (“LMIA”) is the parent company, issuer and obligor of the second-priority senior notes due July 15, 2019 (the “Notes”). The payment obligations of LMIA under the Notes are guaranteed and secured by LMIA and all of its subsidiaries other than minor subsidiaries as further described below. These Notes are guaranteed on a second-priority senior secured basis, jointly and severally, by LMIA (“Guarantor Parent”) and all of its existing and future 100% owned subsidiaries (collectively, the “Guarantor Subsidiaries”) other than minor subsidiaries. Such guaranties are full and unconditional. LMIA conducts substantially all of its business through and derives virtually all of its income from its subsidiaries. Therefore, its ability to make required principal and interest payments with respect to its indebtedness depends on the earnings of subsidiaries and its ability to receive funds from its subsidiaries. The Notes are secured on a second-priority basis by liens on substantially all of LMIA’s and the Guarantor Subsidiaries’ assets, subject to certain exceptions and permitted liens. The liens securing the Notes are contractually subordinated to the liens that secure indebtedness under the revolving credit facility as a result of the lien subordination provisions of the intercreditor agreement to the extent of the value of the collateral securing such indebtedness as well as being subordinated by other existing indebtedness, including industrial revenue bonds, capital leases and other notes payable, to the extent of the value of the collateral that secures such existing indebtedness. As a consequence of this lien subordination and existing indebtedness the notes and the guarantees are effectively subordinated to the extent of the value of the collateral that secures them. Decisions regarding the maintenance and release of the collateral secured by the collateral agreement are made by the lenders under the modified revolving credit facility, and neither the indenture trustee nor the holders of the Notes have control of decisions regarding the release of collateral. We have not presented separate financial statements and separate disclosures have not been provided concerning the Guarantor Subsidiaries due to the presentation of condensed consolidating financial information set forth in this Note, consistent with the Securities and Exchange Commission (the “SEC”) rules governing reporting on guarantor financial information. Supplemental condensed consolidating financial information of the Company, including such information for the Guarantor Subsidiaries, is presented below. Investments in subsidiaries are presented using the equity method of accounting. The principal elimination entries eliminate investments in subsidiaries and inter-company balances and transactions. CONDENSED CONSOLIDATING BALANCE SHEET as of March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Assets Current assets: Cash and cash equivalents $ 1,112 $ 327 $ — $ 1,439 Trade accounts receivable, net 1,314 53,639 — 54,953 Intercompany receivables 228,134 221,138 (449,272 ) — Inventories — 119,359 — 119,359 Prepaid expenses and other current assets 2,598 2,067 — 4,665 Total current assets 233,158 396,530 (449,272 ) 180,416 Property, plant and equipment, net 5,646 92,635 — 98,281 Investments in subsidiaries 391,482 — (391,482 ) — Goodwill — 86,784 — 86,784 Intangible assets, net — 45,546 — 45,546 Other assets 1,954 1,530 — 3,484 Total assets $ 632,240 $ 623,025 $ (840,754 ) $ 414,511 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 226 $ 19,629 $ — $ 19,855 Accrued expenses 8,908 12,934 — 21,842 Intercompany Payables 273,962 175,310 (449,272 ) — Current installments of long-term debt and capital lease obligations 86 2,266 — 2,352 Total current liabilities 283,182 210,139 (449,272 ) 44,049 Long-term debt and capital lease obligations, less current installments 230,055 18,506 — 248,561 Other long-term liabilities 1,193 2,382 — 3,575 Deferred income taxes — 516 — 516 Total long-term liabilities 231,248 21,404 — 252,652 Total shareholders’ equity 117,810 391,482 (391,482 ) 117,810 Total liabilities and shareholders’ equity $ 632,240 $ 623,025 $ (840,754 ) $ 414,511 CONDENSED CONSOLIDATING BALANCE SHEET as of December 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Assets Current assets: Cash and cash equivalents $ 10,251 $ 253 $ — $ 10,504 Trade accounts receivable, net 1,220 47,271 — 48,491 Intercompany receivables 196,496 203,128 (399,624 ) $ — Inventories — 114,775 — 114,775 Prepaid expenses and other current assets 2,224 1,923 — 4,147 Total current assets 210,191 367,350 (399,624 ) 177,917 Property, plant and equipment, net 5,430 95,539 — 100,969 Investments in subsidiaries 387,868 — (387,868 ) — Goodwill — 86,784 — 86,784 Intangible assets, net — 46,582 — 46,582 Other assets 2,135 1,593 — 3,728 Total assets $ 605,624 $ 597,848 $ (787,492 ) $ 415,980 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 1,393 $ 11,763 $ — $ 13,156 Accrued expenses 17,009 13,006 — 30,015 Intercompany Payables 237,548 162,076 (399,624 ) — Current installments of long-term debt and capital lease obligations 85 2,277 — 2,362 Total current liabilities 256,035 189,122 (399,624 ) 45,533 Long-term debt and capital lease obligations, less current installments 229,752 17,881 — 247,633 Other long-term liabilities 1,881 2,441 — 4,322 Deferred income taxes — 536 — 536 Total long-term liabilities 231,633 20,858 — 252,491 Total shareholders’ equity 117,956 387,868 (387,868 ) 117,956 Total liabilities and shareholders’ equity $ 605,624 $ 597,848 $ (787,492 ) $ 415,980 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Three Months Ended March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Sales and service revenue Product sales $ 58 $ 75,804 $ — $ 75,862 Service revenues 11,378 11,527 (11,436 ) 11,469 Net sales 11,436 87,331 (11,436 ) 87,331 Cost of sales and service revenue Cost of product sales 59 60,277 — 60,336 Cost of service revenues 11,395 10,836 (11,466 ) 10,765 Cost of sales 11,454 71,113 (11,466 ) 71,101 Gross profit (18 ) 16,218 30 16,230 Selling, general and administrative expenses 11,853 11,853 Restructuring expense 451 496 — 947 (Loss) income from operations (469 ) 3,869 30 3,430 Other income (expense): Interest expense (5,030 ) (233 ) — (5,263 ) Other, net 2 (92 ) — (90 ) Income (loss) from equity investments in subsidiaries 3,695 — (3,695 ) — Total other expense (1,333 ) (325 ) (3,695 ) (5,353 ) (Loss) income before income taxes (1,802 ) 3,544 (3,665 ) (1,923 ) (Benefit) provision for income taxes — (164 ) — (164 ) Net (loss) income (1,802 ) 3,708 (3,665 ) (1,759 ) Other comprehensive income (Expense): Change in foreign currency translation adjustment — (13 ) — (13 ) Total comprehensive (loss) income $ (1,802 ) $ 3,695 $ (3,665 ) $ (1,772 ) CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Three Months Ended March 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Sales and service revenue Product sales $ 18 $ 78,457 $ (18 ) $ 78,457 Service revenues 9,213 13,993 (9,188 ) 14,018 Net sales 9,231 92,450 (9,206 ) 92,475 Cost of sales and service revenue Cost of product sales 16 62,553 (18 ) 62,551 Cost of service revenues 9,232 12,683 (9,188 ) 12,727 Cost of sales 9,248 75,236 (9,206 ) 75,278 Gross profit (17 ) 17,214 — 17,197 Selling, general and administrative expenses 129 12,480 — 12,609 Restructuring expense 89 186 — 275 (Loss) income from operations (235 ) 4,548 — 4,313 Other income (expense): Interest expense (5,319 ) (272 ) — (5,591 ) Other, net 2 120 — 122 Income (loss) from equity investments in subsidiaries 2,411 — (2,411 ) — Total other expense (2,906 ) (152 ) (2,411 ) (5,469 ) (Loss) income before income taxes (3,141 ) 4,396 (2,411 ) (1,156 ) (Benefit) provision for income taxes (1,676 ) 1,985 — 309 Net (loss) income (1,465 ) 2,411 (2,411 ) (1,465 ) Other comprehensive income (Expense): Change in foreign currency translation adjustment — (79 ) — (79 ) Total comprehensive (loss) income $ (1,465 ) $ 2,332 $ (2,411 ) $ (1,544 ) CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Operating activities: Net (loss)/income (1,802 ) $ 3,708 $ (3,665 ) $ (1,759 ) Adjustments for non-cash items (2,526 ) 4,519 3,665 5,658 Net changes in operating assets and liabilities, net of acquired businesses (8,787 ) (2,356 ) — (11,143 ) Intercompany activity 4,776 (4,776 ) — — Net cash (used)/provided by operating activities (8,339 ) 1,095 — (7,244 ) Investing activities: Additions to property, plant and equipment (778 ) (1,640 ) — (2,418 ) Proceeds from sale of equipment — 6 — 6 Net cash used by investing activities (778 ) (1,634 ) — (2,412 ) Financing activities: Proceeds from issuance of debt — 1,465 — 1,465 Principal payments on long-term debt and notes payable (22 ) (852 ) — (874 ) Advances on revolving line of credit 2,000 — — 2,000 Payments on revolving line of credit (2,000 ) — — (2,000 ) Net cash provided (used)/provided by financing activities (22 ) 613 — 591 Net (decrease) increase in cash and cash equivalents (9,139 ) 74 — (9,065 ) Cash and cash equivalents, beginning of period 10,251 253 — 10,504 Cash and cash equivalents, end of period $ 1,112 $ 327 $ — $ 1,439 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended March 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Operating activities: Net (loss)/income $ (1,465 ) $ 2,411 $ (2,411 ) $ (1,465 ) Adjustments for non-cash items (3,175 ) 6,308 2,411 5,544 Net changes in operating assets and liabilities, net of acquired businesses (3,583 ) (9,772 ) — (13,355 ) Intercompany activity (8,147 ) 8,147 — — Net cash (used)/provided by operating activities (16,370 ) 7,094 — (9,276 ) Investing activities: Additions to property, plant and equipment (25 ) (6,854 ) — (6,879 ) Net cash used by investing activities (25 ) (6,854 ) — (6,879 ) Financing activities: Principal payments on long-term debt and notes payable (83 ) (531 ) — (614 ) Advances on revolving line of credit 36,000 — — 36,000 Payments on revolving line of credit (24,500 ) — — (24,500 ) Payments for debt issuance cost (94 ) — — (94 ) Net cash provided (used) by financing activities 11,323 (531 ) — 10,792 Net (decrease) increase in cash and cash equivalents (5,072 ) (291 ) — (5,363 ) Cash and cash equivalents, beginning of period 7,058 869 — 7,927 Cash and cash equivalents, end of period $ 1,986 $ 578 $ — $ 2,564

Summary of Significant Accoun19

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. The year-end condensed balance sheet data was derived from audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, all recurring adjustments considered necessary for a fair statement have been included. Operating results for the three months ended March 31, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016 . These financial statements should be read in conjunction with the consolidated financial statements and accompanying footnotes included in the Annual Report on Form 10-K, as amended, of LMI Aerospace, Inc. (the "Company”) for the year ended December 31, 2015 , as filed with the Securities and Exchange Commission on March 17, 2016.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make certain estimates and assumptions. These estimates and assumptions affect the reported amounts in the financial statements and accompanying notes. Actual results could differ from these estimates.
Recent Accounting Standards	Recent Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers (Topic 606). On July 9, 2015 the FASB voted to approve a one year delay of the effective date and to permit companies to voluntarily adopt the new standard as of the original effective date. The new standard is effective for reporting periods beginning after December 15, 2017. The standard will supersede existing revenue recognition guidance, including industry-specific guidance, and will provide companies with a single revenue recognition model for recognizing revenue from contracts with customers. The standard requires revenue to be recognized when promised goods or services are transferred to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. Adoption of the new rules could affect the timing of revenue recognition for certain transactions. The two permitted transition methods under the new standard are the full retrospective method, in which case the standard would be applied to each prior reporting period presented, or the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. The provisions of this new guidance are effective as of the beginning of the Company’s first quarter of 2018. The Company is currently evaluating the transition method to be used and the impact of adoption of this standard on its consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, "Leases." The standard requires lessees to recognize a lease liability and a lease asset for all leases, including operating leases, with a term greater than 12 months on its balance sheet. The update also expands the required quantitative and qualitative disclosures surrounding leases. The provisions of this new guidance are effective as of the beginning of the Company’s first quarter of 2019. This update will be applied using a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company is currently evaluating the effect of this update on its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which amends Accounting Standards Codification (“ASC”) Topic 718, Compensation – Stock Compensation. The standard simplifies the accounting for stock-based compensation, including amendments on how both taxes related to stock-based compensation and cash payments made to taxing authorities are recorded. These amendments are expected to impact net income, earnings per share and the consolidated statement of cash flows. The new guidance is effective for financial statements issued for annual reporting periods beginning after December 15, 2016, and early application is permitted, during fiscal 2016, with any adjustments reflected as of the beginning of the fiscal year of adoption. The Company is currently evaluating the impact of this standard on its consolidated financial statements. All other issued but not yet effective accounting pronouncements are not expected to have a material impact on our Condensed Consolidated Financial Statements.

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Schedule of Change in Accounting Estimate [Table Text Block]	Cumulative catch-up adjustments had the following impacts to operating income for the periods presented: Three Months Ended March 31, 2016 2015 Favorable adjustments $ 83 $ 412 Unfavorable adjustments (168 ) (36 ) Net (unfavorable) favorable operating income adjustments $ (85 ) $ 376
Schedule of accounts receivable, net	Accounts receivable, net consists of the following: March 31, 2016 December 31, 2015 Trade receivables $ 48,675 $ 42,307 Unbilled revenue 4,879 4,869 Other receivables 1,640 1,561 55,194 48,737 Less: Allowance for doubtful accounts (241 ) (246 ) Accounts receivable, net $ 54,953 $ 48,491
Impact of operating income	Cumulative catch-up adjustments had the following impacts to operating income for the periods presented: Three Months Ended March 31, 2016 2015 Favorable adjustments $ 83 $ 412 Unfavorable adjustments (168 ) (36 ) Net (unfavorable) favorable operating income adjustments $ (85 ) $ 376 At both March 31, 2016 and December 31, 2015, the Company had recognized a loss reserve of $1,992 on the Mitsubishi Regional Jet design build program. The adjustment in 2015 related to this program was recorded as a reduction to revenue in the Consolidated Statements of Comprehensive Income (Loss).

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2016
Inventory Disclosure [Abstract]
Schedule of Deferred Cost in Inventory by Market [Table Text Block]	he following table illustrates the market to which capitalized contract cost at March 31, 2016 and December 31, 2015 related: March 31, 2016 December 31, 2015 Large commercial aircraft $ 10,933 $ 11,528 Corporate and regional aircraft 17,786 16,721 Military 3,923 3,939 Total capitalized contract cost $ 32,642 $ 32,188
Inventories	Inventories consist of the following: March 31, 2016 December 31, 2015 Raw materials $ 14,044 $ 12,513 Work in progress 24,699 22,681 Manufactured and purchased components 19,615 19,224 Finished goods 28,359 28,169 Product inventory 86,717 82,587 Capitalized contract costs 32,642 32,188 Total inventories $ 119,359 $ 114,775

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	The following table summarizes the net carrying amount of goodwill by segment at March 31, 2016 and December 31, 2015 , respectively: Engineering Aerostructures Services Total March 31, December 31, March 31, December 31, March 31, December 31, 2016 2015 2016 2015 2016 2015 Balance at: Gross Goodwill $ 141,953 $ 141,953 $ 50,741 $ 50,741 $ 192,694 $ 192,694 Accumulated impairment loss (79,471 ) (79,471 ) (26,439 ) (26,439 ) (105,910 ) (105,910 ) Net Goodwill $ 62,482 $ 62,482 $ 24,302 $ 24,302 $ 86,784 $ 86,784
Finite and infinite lived intangible assets	Intangible assets primarily consist of trademarks and customer intangibles. The carrying values were as follows: March 31, 2016 December 31, 2015 Trademarks $ 778 $ 778 Customer intangible assets 68,991 68,991 Other 1,274 1,274 Accumulated amortization (25,497 ) (24,461 ) Intangible assets, net $ 45,546 $ 46,582

Long-term Debt and Capital Le23

Long-term Debt and Capital Lease Obligations (Tables)	3 Months Ended
	Mar. 31, 2016
Debt Disclosure [Abstract]
Long-term debt	Long-term debt and capital lease obligations consist of the following: March 31, 2016 December 31, 2015 Second priority senior secured notes at a fixed rate of 7.375% at March 31, 2016 $ 234,175 $ 234,175 Missouri IRBs at fixed rate of 2.80% at March 31, 2016 and December 31, 2015 6,791 6,901 Capital leases, at fixed rates ranging from 3.00% to 4.50% and 3.00% to 7.73% at March 31, 2016 and December 31, 2015 12,521 11,708 Notes payable, principal and interest payable monthly, at fixed rates up to 2.56% at March 31, 2016 and December 31, 2015 1,639 1,750 Debt issuance cost (4,213 ) (4,539 ) Total debt $ 250,913 $ 249,995 Less current installments 2,352 2,362 Total long-term debt and capital lease obligations $ 248,561 $ 247,633

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Calculation of basic and diluted earnings per share	The following table shows a reconciliation of the numerators and denominators used in calculating basic and diluted earnings per share. Three months ended March 31, 2016 2015 Numerators Net loss $ (1,759 ) $ (1,465 ) Denominators Weighted average common shares - basic 12,975,485 12,794,766 Dilutive effect of restricted stock — — Weighted average common shares - diluted 12,975,485 12,794,766 Basic loss per share $ (0.14 ) $ (0.11 ) Diluted loss per share $ (0.14 ) $ (0.11 )

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2016
LMI Aerospace, Inc. 2005 Long-Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of the activity for non-vested restricted stock awards	A summary of the activity for non-vested restricted stock awards under the 2005 Plan is presented below: Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Outstanding at January 1, 2016 253,434 $ 14.54 Granted — — Vested (52,615 ) 18.03 Forfeited (7,516 ) 14.16 Outstanding at March 31, 2016 193,303 $ 13.61
LMI Aerospace, Inc. 2015 Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of the activity for non-vested restricted stock awards	A summary of the activity for non-vested restricted stock awards under the 2015 Plan is presented below: Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Outstanding at January 1, 2016 61,801 $ 9.79 Granted 85,648 9.40 Vested — — Forfeited — — Outstanding at March 31, 2016 147,449 $ 9.56

Business Segment Information (T

Business Segment Information (Tables)	3 Months Ended
	Mar. 31, 2016
Segment Reporting [Abstract]
Information about reported segments on the basis used internally to evaluate segment performance	The table below presents information about reported segments on the same basis used internally to evaluate segment performance: Three months ended March 31, 2016 2015 Net sales: Aerostructures $ 76,954 $ 79,245 Engineering Services 11,059 13,504 Eliminations (682 ) (274 ) $ 87,331 $ 92,475 Income from operations: Aerostructures $ 3,465 $ 5,055 Engineering Services 191 (764 ) Eliminations (226 ) 22 $ 3,430 $ 4,313

Restructuring (Tables)

Restructuring (Tables)	3 Months Ended
	Mar. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring costs [Table Text Block]	The following table summarizes the incurred charges associated with these restructuring activities: Three months ended March 31, 2016 2015 St. Charles machine parts operations relocation $ — $ 171 Other employment separation activities 947 104 Total $ 947 $ 275 Expense incurred by segment: Aerostructures $ 947 $ 260 Engineering Services — 15 Total $ 947 $ 275
Schedule of restructuring activity	The following table summarizes the Company's restructuring activities during the three months ended March 31, 2016 : Employee Severance Other Total Accrued restructuring balance as of December 31, 2015 $ 162 $ 93 $ 255 Accrual additions 947 — 947 Cash payments (204 ) (31 ) (235 ) Accrued restructuring balance as of March 31, 2016 $ 905 $ 62 $ 967

Condensed Consolidating Finan28

Condensed Consolidating Financial Statements (Tables)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Income Statements, Captions [Line Items]
Condensed Consolidating Balance Sheet	CONDENSED CONSOLIDATING BALANCE SHEET as of March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Assets Current assets: Cash and cash equivalents $ 1,112 $ 327 $ — $ 1,439 Trade accounts receivable, net 1,314 53,639 — 54,953 Intercompany receivables 228,134 221,138 (449,272 ) — Inventories — 119,359 — 119,359 Prepaid expenses and other current assets 2,598 2,067 — 4,665 Total current assets 233,158 396,530 (449,272 ) 180,416 Property, plant and equipment, net 5,646 92,635 — 98,281 Investments in subsidiaries 391,482 — (391,482 ) — Goodwill — 86,784 — 86,784 Intangible assets, net — 45,546 — 45,546 Other assets 1,954 1,530 — 3,484 Total assets $ 632,240 $ 623,025 $ (840,754 ) $ 414,511 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 226 $ 19,629 $ — $ 19,855 Accrued expenses 8,908 12,934 — 21,842 Intercompany Payables 273,962 175,310 (449,272 ) — Current installments of long-term debt and capital lease obligations 86 2,266 — 2,352 Total current liabilities 283,182 210,139 (449,272 ) 44,049 Long-term debt and capital lease obligations, less current installments 230,055 18,506 — 248,561 Other long-term liabilities 1,193 2,382 — 3,575 Deferred income taxes — 516 — 516 Total long-term liabilities 231,248 21,404 — 252,652 Total shareholders’ equity 117,810 391,482 (391,482 ) 117,810 Total liabilities and shareholders’ equity $ 632,240 $ 623,025 $ (840,754 ) $ 414,511 CONDENSED CONSOLIDATING BALANCE SHEET as of December 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Assets Current assets: Cash and cash equivalents $ 10,251 $ 253 $ — $ 10,504 Trade accounts receivable, net 1,220 47,271 — 48,491 Intercompany receivables 196,496 203,128 (399,624 ) $ — Inventories — 114,775 — 114,775 Prepaid expenses and other current assets 2,224 1,923 — 4,147 Total current assets 210,191 367,350 (399,624 ) 177,917 Property, plant and equipment, net 5,430 95,539 — 100,969 Investments in subsidiaries 387,868 — (387,868 ) — Goodwill — 86,784 — 86,784 Intangible assets, net — 46,582 — 46,582 Other assets 2,135 1,593 — 3,728 Total assets $ 605,624 $ 597,848 $ (787,492 ) $ 415,980 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 1,393 $ 11,763 $ — $ 13,156 Accrued expenses 17,009 13,006 — 30,015 Intercompany Payables 237,548 162,076 (399,624 ) — Current installments of long-term debt and capital lease obligations 85 2,277 — 2,362 Total current liabilities 256,035 189,122 (399,624 ) 45,533 Long-term debt and capital lease obligations, less current installments 229,752 17,881 — 247,633 Other long-term liabilities 1,881 2,441 — 4,322 Deferred income taxes — 536 — 536 Total long-term liabilities 231,633 20,858 — 252,491 Total shareholders’ equity 117,956 387,868 (387,868 ) 117,956 Total liabilities and shareholders’ equity $ 605,624 $ 597,848 $ (787,492 ) $ 415,980
Condensed Consolidating Statements of Comprehensive Income (Loss)	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Three Months Ended March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Sales and service revenue Product sales $ 58 $ 75,804 $ — $ 75,862 Service revenues 11,378 11,527 (11,436 ) 11,469 Net sales 11,436 87,331 (11,436 ) 87,331 Cost of sales and service revenue Cost of product sales 59 60,277 — 60,336 Cost of service revenues 11,395 10,836 (11,466 ) 10,765 Cost of sales 11,454 71,113 (11,466 ) 71,101 Gross profit (18 ) 16,218 30 16,230 Selling, general and administrative expenses 11,853 11,853 Restructuring expense 451 496 — 947 (Loss) income from operations (469 ) 3,869 30 3,430 Other income (expense): Interest expense (5,030 ) (233 ) — (5,263 ) Other, net 2 (92 ) — (90 ) Income (loss) from equity investments in subsidiaries 3,695 — (3,695 ) — Total other expense (1,333 ) (325 ) (3,695 ) (5,353 ) (Loss) income before income taxes (1,802 ) 3,544 (3,665 ) (1,923 ) (Benefit) provision for income taxes — (164 ) — (164 ) Net (loss) income (1,802 ) 3,708 (3,665 ) (1,759 ) Other comprehensive income (Expense): Change in foreign currency translation adjustment — (13 ) — (13 ) Total comprehensive (loss) income $ (1,802 ) $ 3,695 $ (3,665 ) $ (1,772 )	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) Three Months Ended March 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Sales and service revenue Product sales $ 18 $ 78,457 $ (18 ) $ 78,457 Service revenues 9,213 13,993 (9,188 ) 14,018 Net sales 9,231 92,450 (9,206 ) 92,475 Cost of sales and service revenue Cost of product sales 16 62,553 (18 ) 62,551 Cost of service revenues 9,232 12,683 (9,188 ) 12,727 Cost of sales 9,248 75,236 (9,206 ) 75,278 Gross profit (17 ) 17,214 — 17,197 Selling, general and administrative expenses 129 12,480 — 12,609 Restructuring expense 89 186 — 275 (Loss) income from operations (235 ) 4,548 — 4,313 Other income (expense): Interest expense (5,319 ) (272 ) — (5,591 ) Other, net 2 120 — 122 Income (loss) from equity investments in subsidiaries 2,411 — (2,411 ) — Total other expense (2,906 ) (152 ) (2,411 ) (5,469 ) (Loss) income before income taxes (3,141 ) 4,396 (2,411 ) (1,156 ) (Benefit) provision for income taxes (1,676 ) 1,985 — 309 Net (loss) income (1,465 ) 2,411 (2,411 ) (1,465 ) Other comprehensive income (Expense): Change in foreign currency translation adjustment — (79 ) — (79 ) Total comprehensive (loss) income $ (1,465 ) $ 2,332 $ (2,411 ) $ (1,544 )
Condensed Consolidating Cash Flow Statement	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Operating activities: Net (loss)/income (1,802 ) $ 3,708 $ (3,665 ) $ (1,759 ) Adjustments for non-cash items (2,526 ) 4,519 3,665 5,658 Net changes in operating assets and liabilities, net of acquired businesses (8,787 ) (2,356 ) — (11,143 ) Intercompany activity 4,776 (4,776 ) — — Net cash (used)/provided by operating activities (8,339 ) 1,095 — (7,244 ) Investing activities: Additions to property, plant and equipment (778 ) (1,640 ) — (2,418 ) Proceeds from sale of equipment — 6 — 6 Net cash used by investing activities (778 ) (1,634 ) — (2,412 ) Financing activities: Proceeds from issuance of debt — 1,465 — 1,465 Principal payments on long-term debt and notes payable (22 ) (852 ) — (874 ) Advances on revolving line of credit 2,000 — — 2,000 Payments on revolving line of credit (2,000 ) — — (2,000 ) Net cash provided (used)/provided by financing activities (22 ) 613 — 591 Net (decrease) increase in cash and cash equivalents (9,139 ) 74 — (9,065 ) Cash and cash equivalents, beginning of period 10,251 253 — 10,504 Cash and cash equivalents, end of period $ 1,112 $ 327 $ — $ 1,439	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended March 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Operating activities: Net (loss)/income $ (1,465 ) $ 2,411 $ (2,411 ) $ (1,465 ) Adjustments for non-cash items (3,175 ) 6,308 2,411 5,544 Net changes in operating assets and liabilities, net of acquired businesses (3,583 ) (9,772 ) — (13,355 ) Intercompany activity (8,147 ) 8,147 — — Net cash (used)/provided by operating activities (16,370 ) 7,094 — (9,276 ) Investing activities: Additions to property, plant and equipment (25 ) (6,854 ) — (6,879 ) Net cash used by investing activities (25 ) (6,854 ) — (6,879 ) Financing activities: Principal payments on long-term debt and notes payable (83 ) (531 ) — (614 ) Advances on revolving line of credit 36,000 — — 36,000 Payments on revolving line of credit (24,500 ) — — (24,500 ) Payments for debt issuance cost (94 ) — — (94 ) Net cash provided (used) by financing activities 11,323 (531 ) — 10,792 Net (decrease) increase in cash and cash equivalents (5,072 ) (291 ) — (5,363 ) Cash and cash equivalents, beginning of period 7,058 869 — 7,927 Cash and cash equivalents, end of period $ 1,986 $ 578 $ — $ 2,564

Condensed Consolidating Finan29

Condensed Consolidating Financial Statements Balance Sheet (Tables)	3 Months Ended
	Mar. 31, 2016
Statement of Financial Position [Abstract]
Condensed Balance Sheet [Table Text Block]	CONDENSED CONSOLIDATING BALANCE SHEET as of March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Assets Current assets: Cash and cash equivalents $ 1,112 $ 327 $ — $ 1,439 Trade accounts receivable, net 1,314 53,639 — 54,953 Intercompany receivables 228,134 221,138 (449,272 ) — Inventories — 119,359 — 119,359 Prepaid expenses and other current assets 2,598 2,067 — 4,665 Total current assets 233,158 396,530 (449,272 ) 180,416 Property, plant and equipment, net 5,646 92,635 — 98,281 Investments in subsidiaries 391,482 — (391,482 ) — Goodwill — 86,784 — 86,784 Intangible assets, net — 45,546 — 45,546 Other assets 1,954 1,530 — 3,484 Total assets $ 632,240 $ 623,025 $ (840,754 ) $ 414,511 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 226 $ 19,629 $ — $ 19,855 Accrued expenses 8,908 12,934 — 21,842 Intercompany Payables 273,962 175,310 (449,272 ) — Current installments of long-term debt and capital lease obligations 86 2,266 — 2,352 Total current liabilities 283,182 210,139 (449,272 ) 44,049 Long-term debt and capital lease obligations, less current installments 230,055 18,506 — 248,561 Other long-term liabilities 1,193 2,382 — 3,575 Deferred income taxes — 516 — 516 Total long-term liabilities 231,248 21,404 — 252,652 Total shareholders’ equity 117,810 391,482 (391,482 ) 117,810 Total liabilities and shareholders’ equity $ 632,240 $ 623,025 $ (840,754 ) $ 414,511 CONDENSED CONSOLIDATING BALANCE SHEET as of December 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Assets Current assets: Cash and cash equivalents $ 10,251 $ 253 $ — $ 10,504 Trade accounts receivable, net 1,220 47,271 — 48,491 Intercompany receivables 196,496 203,128 (399,624 ) $ — Inventories — 114,775 — 114,775 Prepaid expenses and other current assets 2,224 1,923 — 4,147 Total current assets 210,191 367,350 (399,624 ) 177,917 Property, plant and equipment, net 5,430 95,539 — 100,969 Investments in subsidiaries 387,868 — (387,868 ) — Goodwill — 86,784 — 86,784 Intangible assets, net — 46,582 — 46,582 Other assets 2,135 1,593 — 3,728 Total assets $ 605,624 $ 597,848 $ (787,492 ) $ 415,980 Liabilities and shareholders’ equity Current liabilities: Accounts payable $ 1,393 $ 11,763 $ — $ 13,156 Accrued expenses 17,009 13,006 — 30,015 Intercompany Payables 237,548 162,076 (399,624 ) — Current installments of long-term debt and capital lease obligations 85 2,277 — 2,362 Total current liabilities 256,035 189,122 (399,624 ) 45,533 Long-term debt and capital lease obligations, less current installments 229,752 17,881 — 247,633 Other long-term liabilities 1,881 2,441 — 4,322 Deferred income taxes — 536 — 536 Total long-term liabilities 231,633 20,858 — 252,491 Total shareholders’ equity 117,956 387,868 (387,868 ) 117,956 Total liabilities and shareholders’ equity $ 605,624 $ 597,848 $ (787,492 ) $ 415,980

Condensed Consolidating Finan30

Condensed Consolidating Financial Statements statement of cash flows (Tables)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Cash Flows [Abstract]
Condensed Cash Flow Statement [Table Text Block]	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended March 31, 2016 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Operating activities: Net (loss)/income (1,802 ) $ 3,708 $ (3,665 ) $ (1,759 ) Adjustments for non-cash items (2,526 ) 4,519 3,665 5,658 Net changes in operating assets and liabilities, net of acquired businesses (8,787 ) (2,356 ) — (11,143 ) Intercompany activity 4,776 (4,776 ) — — Net cash (used)/provided by operating activities (8,339 ) 1,095 — (7,244 ) Investing activities: Additions to property, plant and equipment (778 ) (1,640 ) — (2,418 ) Proceeds from sale of equipment — 6 — 6 Net cash used by investing activities (778 ) (1,634 ) — (2,412 ) Financing activities: Proceeds from issuance of debt — 1,465 — 1,465 Principal payments on long-term debt and notes payable (22 ) (852 ) — (874 ) Advances on revolving line of credit 2,000 — — 2,000 Payments on revolving line of credit (2,000 ) — — (2,000 ) Net cash provided (used)/provided by financing activities (22 ) 613 — 591 Net (decrease) increase in cash and cash equivalents (9,139 ) 74 — (9,065 ) Cash and cash equivalents, beginning of period 10,251 253 — 10,504 Cash and cash equivalents, end of period $ 1,112 $ 327 $ — $ 1,439	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended March 31, 2015 LMIA(Guarantor Parent) Guarantor Subsidiaries Consolidating/Eliminating Entries Consolidated Operating activities: Net (loss)/income $ (1,465 ) $ 2,411 $ (2,411 ) $ (1,465 ) Adjustments for non-cash items (3,175 ) 6,308 2,411 5,544 Net changes in operating assets and liabilities, net of acquired businesses (3,583 ) (9,772 ) — (13,355 ) Intercompany activity (8,147 ) 8,147 — — Net cash (used)/provided by operating activities (16,370 ) 7,094 — (9,276 ) Investing activities: Additions to property, plant and equipment (25 ) (6,854 ) — (6,879 ) Net cash used by investing activities (25 ) (6,854 ) — (6,879 ) Financing activities: Principal payments on long-term debt and notes payable (83 ) (531 ) — (614 ) Advances on revolving line of credit 36,000 — — 36,000 Payments on revolving line of credit (24,500 ) — — (24,500 ) Payments for debt issuance cost (94 ) — — (94 ) Net cash provided (used) by financing activities 11,323 (531 ) — 10,792 Net (decrease) increase in cash and cash equivalents (5,072 ) (291 ) — (5,363 ) Cash and cash equivalents, beginning of period 7,058 869 — 7,927 Cash and cash equivalents, end of period $ 1,986 $ 578 $ — $ 2,564

Accounts Receivable, Net (Detai

Accounts Receivable, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Entity Information [Line Items]
Loss reserve on long-term production contract	$ 1,992
Trade receivables	48,675		$ 42,307
Unbilled revenue	4,879		4,869
Other receivables	1,640		1,561
Accounts receivable, gross	55,194		48,737
Less: Allowance for doubtful accounts	(241)		(246)
Accounts receivable, net	54,953		48,491
Inventory Amount, Unpriced Change Orders for Long-term Contracts or Programs	859		$ 858
Change in Accounting Estimate [Abstract]
Favorable adjustments	83	$ 412
Unfavorable adjustments	(168)	(36)
Net operating income adjustments	$ (85)	$ 376

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Deferred Cost in Inventory by Market [Line Items]
Deferred Cost in Inventory Long-Term Production Contracts	$ 32,642	$ 32,188
Inventories [Abstract]
Raw materials	14,044	12,513
Work in progress	24,699	22,681
Manufactured and purchased components	19,615	19,224
Finished goods	28,359	28,169
Product inventory	86,717	82,587
Capitalized contract costs	32,642	32,188
Total inventories	119,359	114,775
Large Commercial Aircraft [Member]
Schedule of Deferred Cost in Inventory by Market [Line Items]
Deferred Cost in Inventory Long-Term Production Contracts	10,933	11,528
Corporate and Regional Aircraft [Member]
Schedule of Deferred Cost in Inventory by Market [Line Items]
Deferred Cost in Inventory Long-Term Production Contracts	17,786	16,721
Military [Member]
Schedule of Deferred Cost in Inventory by Market [Line Items]
Deferred Cost in Inventory Long-Term Production Contracts	$ 3,923	$ 3,939

Inventories Capitalized Contrac

Inventories Capitalized Contract Cost (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Other Inventory, Capitalized Costs, Net	$ 5,821	$ 5,970

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill, Gross	$ 192,694	$ 192,694
Goodwill, Impaired, Accumulated Impairment Loss	(105,910)	(105,910)
Goodwill acquired	86,784	86,784
Aerostructures [Member]
Goodwill [Line Items]
Goodwill, Gross	141,953	141,953
Goodwill, Impaired, Accumulated Impairment Loss	(79,471)	(79,471)
Goodwill acquired	62,482	62,482
Engineering Services [Member]
Goodwill [Line Items]
Goodwill, Gross	50,741	50,741
Goodwill, Impaired, Accumulated Impairment Loss	(26,439)	(26,439)
Goodwill acquired	$ 24,302	$ 24,302

Goodwill and Intangible Asset35

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Intangible Assets [Abstract]
Trademarks	$ 778		$ 778
Customer intangible assets	68,991		68,991
Other	1,274		1,274
Accumulated amortization	(25,497)		(24,461)
Intangible assets, net	45,546		46,582
Amortization expense on intangible assets	1,036	$ 1,089
Trademarks [Member]
Intangible Assets [Abstract]
Accumulated amortization	(778)		(778)
Customer Intangible Assets [Member]
Intangible Assets [Abstract]
Accumulated amortization	(23,813)		(22,816)
Other [Member]
Intangible Assets [Abstract]
Accumulated amortization	$ (906)		$ (867)

Long-term Debt and Capital Le36

Long-term Debt and Capital Lease Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2013
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 1,388
Long-term debt gross	250,913	$ 249,995
Debt Issuance Costs, Net	(4,213)	(4,539)
Less current installments	2,352	2,362
Long-term debt and capital lease obligations, less current installments	248,561	247,633
Capital Lease Obligations Incurred	1,465
Second Priority Senior Secured Notes [Member]
Debt Instrument [Line Items]
Long-term debt gross	$ 234,175	234,175
Fixed interest rate (in hundredths)	7.375%
Missouri IRBs [Member]
Debt Instrument [Line Items]
Long-term debt gross	$ 6,791	$ 6,901
Fixed interest rate (in hundredths)	2.80%	2.80%
Capital Leases [Member]
Debt Instrument [Line Items]
Long-term debt gross	$ 12,521	$ 11,708
Capital Leases [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	3.00%		3.00%
Capital Leases [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	4.50%		7.73%
Notes Payable [Member]
Debt Instrument [Line Items]
Long-term debt gross	$ 1,639	$ 1,750
Notes Payable [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	2.56%	2.56%

Long-term Debt and Capital Le37

Long-term Debt and Capital Lease Obligations, Line of Credit Facility (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Line of Credit Facility, Fair Value of Amount Outstanding	$ 0	$ 0
Maximum borrowing capacity	90,000,000
Reserve Against line of Credit	15,000,000
Line of Credit Facility, Remaining Borrowing Capacity	75,000,000
Letters of Credit Outstanding, Amount	1,388,000
Line of Credit Facility, Current Borrowing Capacity	$ 51,863,000
Line of Credit Facility, Borrowing Capacity, Description	The maximum amount, less reserves, available for borrowing at levels below $30,000 is based on a sum of 45% of eligible receivables, 30% of eligible inventories and an additional amount of eligible equipment up to 20% of total borrowings under the facility. The maximum amount, less reserves, available for borrowing at levels above $30,000 is based on a sum of 75% of eligible receivables, 45% of eligible inventories and an additional amount of eligible equipment up to 20% of total borrowings under the facility.
Line of Credit Facility, Interest Rate During Period	6.00%
Commitment fee (in hundredths)	0.50%
Federal funds rate [Member]
Line of Credit Facility [Line Items]
Spread over reference rate (in hundredths)	0.50%
One Month Eurodollar [Member]
Line of Credit Facility [Line Items]
Spread over reference rate (in hundredths)	1.00%
Minimum [Member]
Line of Credit Facility [Line Items]
Commitment fee (in hundredths)	0.375%
Minimum [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Spread over reference rate (in hundredths)	3.00%
Minimum [Member] | Alternate Base Rate [Member]
Line of Credit Facility [Line Items]
Spread over reference rate (in hundredths)	2.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Commitment fee (in hundredths)	0.50%
Maximum [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Spread over reference rate (in hundredths)	3.50%
Maximum [Member] | Alternate Base Rate [Member]
Line of Credit Facility [Line Items]
Spread over reference rate (in hundredths)	2.50%

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerators [Abstract]
Net loss	$ (1,759)	$ (1,465)
Denominators [Abstract]
Weighted average common shares - basic (in shares)	12,975,485	12,794,766
Dilutive effect of restricted stock (in shares)	0	0
Weighted average common shares - diluted (in shares)	12,975,485	12,794,766
Basic loss per share	$ (0.14)	$ (0.11)
Diluted loss per share	$ (0.14)	$ (0.11)
Antidilutive securities excluded from computation of earnings per share (in shares)	83,603	146,934

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2015
LMI Aerospace, Inc. 2005 Long-Term Incentive Plan [Member] | Restricted Stock Awards [Member]
Shares
Outstanding beginning balance (in shares)	253,434
Granted (in shares)	0
Vested (in shares)	(52,615)
Forfeited (in shares)	(7,516)
Outstanding ending balance (in shares)	193,303	253,434		253,434
Weighted Average Grant Date Fair Value
Outstanding beginning balance (in dollars per share)	$ 14.54
Granted (in dollars per share)	0
Vested (in dollars per share)	18.03
Forfeited (in dollars per share)	14.16
Outstanding ending balance (in dollars per share)	$ 13.61	$ 14.54		$ 14.54
Compensation expense	$ 161		$ 492
Unrecognized compensation costs	$ 1,202	$ 1,762		$ 1,762
Costs are expected to be recognized over a weighted average period	1 year 6 months 22 days	1 year 6 months 22 days
LMI Aerospace, Inc. 2015 Long-term Incentive Plan [Member]
Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	750,000
LMI Aerospace, Inc. 2015 Long-term Incentive Plan [Member] | Restricted Stock Awards [Member]
Shares
Outstanding beginning balance (in shares)	61,801
Granted (in shares)	85,648
Vested (in shares)	0
Forfeited (in shares)	0
Outstanding ending balance (in shares)	147,449	61,801		61,801
Weighted Average Grant Date Fair Value
Outstanding beginning balance (in dollars per share)	$ 9.79
Granted (in dollars per share)	9.40
Vested (in dollars per share)	0
Forfeited (in dollars per share)	0
Outstanding ending balance (in dollars per share)	$ 9.56	$ 9.79		$ 9.79
Compensation expense	$ 174		$ 0
Unrecognized compensation costs	$ 934	$ 303		$ 303
Costs are expected to be recognized over a weighted average period	1 year 9 months 18 days			6 months 4 days

Business Segment Information (D

Business Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)segment	Mar. 31, 2015USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	2
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales	$ 87,331	$ 92,475
Income from operations	3,430	4,313
Aerostructures [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales	76,954	79,245
Income from operations	3,465	5,055
Engineering Services [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales	11,059	13,504
Income from operations	191	(764)
Eliminations [Member]
Information about reported segments on the basis used internally to evaluate segment performance [Abstract]
Net sales	(682)	(274)
Income from operations	$ (226)	$ 22

Customer Concentration (Details

Customer Concentration (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Spirit [Member] | Revenue [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	36.60%	35.00%
Spirit [Member] | Accounts Receivable [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	34.40%		28.60%
Gulfstream [Member] | Revenue [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	11.50%	14.00%
Gulfstream [Member] | Accounts Receivable [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	12.60%		15.50%
The Boeing Company [Member] | Revenue [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	10.90%	9.50%
The Boeing Company [Member] | Accounts Receivable [Member]
Revenue and Accounts Receivable, Major Customer [Line Items]
Percentage attributable to customer (in hundredths)	8.00%		10.20%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Valuation Allowance			$ 14,641
(Benefit) provision for income taxes	$ 164	$ (309)

Restructuring (Details)

Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	$ 235
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Payments for Restructuring	204	$ 328
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	947	275
Selling, General and Administrative Expenses [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	947	275
Selling, General and Administrative Expenses [Member] | Employee Severance [Member] | Relocation of Machining Parts Operations from St. Charles Facility [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	0	171
Selling, General and Administrative Expenses [Member] | Employee Severance [Member] | Other Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	947	104
Aerostructures [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	947	260
Engineering Services [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring related expenses	$ 0	$ 15

Restructuring - Restructuring R

Restructuring - Restructuring Reserve (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Reserve [Roll Forward]
Accrued restructuring balance as of December 31, 2015	$ 255
Accrual additions	947	$ 275
Cash payments	(235)
Accrued restructuring balance as of March 31, 2016	967
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring balance as of December 31, 2015	162
Accrual additions	947
Cash payments	(204)	$ (328)
Accrued restructuring balance as of March 31, 2016	905
Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring balance as of December 31, 2015	93
Accrual additions	0
Cash payments	(31)
Accrued restructuring balance as of March 31, 2016	$ 62

Condensed Consolidated Balanc45

Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,439	$ 10,504	$ 2,564	$ 7,927
Accounts receivable, net	54,953	48,491
Intercompany receivables	0	0
Inventories	119,359	114,775
Inventories	4,665	4,147
Total current assets	180,416	177,917
Property, plant and equipment, net	98,281	100,969
Investments in subsidiaries	0	0
Goodwill	86,784	86,784
Intangible assets, net	45,546	46,582
Other assets	3,484	3,728
Total assets	414,511	415,980
Accounts payable	19,855	13,156
Accrued expenses	21,842	30,015
Intercompany Payables	0	0
Current installments of long-term debt and capital lease obligations	2,352	2,362
Total current liabilities	44,049	45,533
Long-term debt and capital lease obligations, less current installments	248,561	247,633
Other long-term liabilities	3,575	4,322
Deferred income taxes	516	536
Total long-term liabilities	252,652	252,491
Total shareholders’ equity	117,810	117,956
Total liabilities and shareholders' equity	414,511	415,980
LMIA(Guarantor Parent)
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	1,112	10,251	1,986	7,058
Accounts receivable, net	1,314	1,220
Intercompany receivables	228,134	196,496
Inventories	0	0
Inventories	2,598	2,224
Total current assets	233,158	210,191
Property, plant and equipment, net	5,646	5,430
Investments in subsidiaries	391,482	387,868
Goodwill	0	0
Intangible assets, net	0	0
Other assets	1,954	2,135
Total assets	632,240	605,624
Accounts payable	226	1,393
Accrued expenses	8,908	17,009
Intercompany Payables	273,962	237,548
Current installments of long-term debt and capital lease obligations	86	85
Total current liabilities	283,182	256,035
Long-term debt and capital lease obligations, less current installments	230,055	229,752
Other long-term liabilities	1,193	1,881
Deferred income taxes	0	0
Total long-term liabilities	231,248	231,633
Total shareholders’ equity	117,810	117,956
Total liabilities and shareholders' equity	632,240	605,624
Guarantor Subsidiaries
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	327	253	578	869
Accounts receivable, net	53,639	47,271
Intercompany receivables	221,138	203,128
Inventories	119,359	114,775
Inventories	2,067	1,923
Total current assets	396,530	367,350
Property, plant and equipment, net	92,635	95,539
Investments in subsidiaries	0	0
Goodwill	86,784	86,784
Intangible assets, net	45,546	46,582
Other assets	1,530	1,593
Total assets	623,025	597,848
Accounts payable	19,629	11,763
Accrued expenses	12,934	13,006
Intercompany Payables	175,310	162,076
Current installments of long-term debt and capital lease obligations	2,266	2,277
Total current liabilities	210,139	189,122
Long-term debt and capital lease obligations, less current installments	18,506	17,881
Other long-term liabilities	2,382	2,441
Deferred income taxes	516	536
Total long-term liabilities	21,404	20,858
Total shareholders’ equity	391,482	387,868
Total liabilities and shareholders' equity	623,025	597,848
Consolidating/Eliminating Entries
Condensed Balance Sheet Statements, Captions [Line Items]
Cash and cash equivalents	0	0	$ 0	$ 0
Accounts receivable, net	0	0
Intercompany receivables	(449,272)	(399,624)
Inventories	0	0
Inventories	0	0
Total current assets	(449,272)	(399,624)
Property, plant and equipment, net	0	0
Investments in subsidiaries	(391,482)	(387,868)
Goodwill	0	0
Intangible assets, net	0	0
Other assets	0	0
Total assets	(840,754)	(787,492)
Accounts payable	0	0
Accrued expenses	0	0
Intercompany Payables	(449,272)	(399,624)
Current installments of long-term debt and capital lease obligations	0	0
Total current liabilities	(449,272)	(399,624)
Long-term debt and capital lease obligations, less current installments	0	0
Other long-term liabilities	0	0
Deferred income taxes	0	0
Total long-term liabilities	0	0
Total shareholders’ equity	(391,482)	(387,868)
Total liabilities and shareholders' equity	$ (840,754)	$ (787,492)

Condensed Consolidating Stateme

Condensed Consolidating Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Income Statements, Captions [Line Items]
Product sales	$ 75,862	$ 78,457
Service revenue	11,469	14,018
Net sales	87,331	92,475
Cost of product sales	60,336	62,551
Cost of service revenue	10,765	12,727
Cost of sales	71,101	75,278
Gross profit	16,230	17,197
Selling, general and administrative expenses	11,853	12,609
Restructuring expense	947	275
Income from operations	3,430	4,313
Interest expense	(5,263)	(5,591)
Other, net	(90)	122
Income (loss) from equity investments in subsidiaries	0	0
Total other expense	(5,353)	(5,469)
Loss before income taxes	(1,923)	(1,156)
(Benefit) provision for income taxes	(164)	309
Net loss	(1,759)	(1,465)
Change in foreign currency translation adjustment	(13)	(79)
Total comprehensive loss	(1,772)	(1,544)
LMIA(Guarantor Parent)
Condensed Income Statements, Captions [Line Items]
Product sales	58	18
Service revenue	11,378	9,213
Net sales	11,436	9,231
Cost of product sales	59	16
Cost of service revenue	11,395	9,232
Cost of sales	11,454	9,248
Gross profit	$ (18)	(17)
Selling, general and administrative expenses		129
Restructuring expense	$ 451	89
Income from operations	(469)	(235)
Interest expense	(5,030)	(5,319)
Other, net	2	2
Income (loss) from equity investments in subsidiaries	3,695	2,411
Total other expense	(1,333)	(2,906)
Loss before income taxes	(1,802)	(3,141)
(Benefit) provision for income taxes	0	(1,676)
Net loss	(1,802)	(1,465)
Change in foreign currency translation adjustment	0	0
Total comprehensive loss	(1,802)	(1,465)
Guarantor Subsidiaries
Condensed Income Statements, Captions [Line Items]
Product sales	75,804	78,457
Service revenue	11,527	13,993
Net sales	87,331	92,450
Cost of product sales	60,277	62,553
Cost of service revenue	10,836	12,683
Cost of sales	71,113	75,236
Gross profit	16,218	17,214
Selling, general and administrative expenses	11,853	12,480
Restructuring expense	496	186
Income from operations	3,869	4,548
Interest expense	(233)	(272)
Other, net	(92)	120
Income (loss) from equity investments in subsidiaries	0	0
Total other expense	(325)	(152)
Loss before income taxes	3,544	4,396
(Benefit) provision for income taxes	(164)	1,985
Net loss	3,708	2,411
Change in foreign currency translation adjustment	(13)	(79)
Total comprehensive loss	3,695	2,332
Consolidating/Eliminating Entries
Condensed Income Statements, Captions [Line Items]
Product sales	0	(18)
Service revenue	(11,436)	(9,188)
Net sales	(11,436)	(9,206)
Cost of product sales	0	(18)
Cost of service revenue	(11,466)	(9,188)
Cost of sales	(11,466)	(9,206)
Gross profit	$ 30	0
Selling, general and administrative expenses		0
Restructuring expense	$ 0	0
Income from operations	30	0
Interest expense	0	0
Other, net	0	0
Income (loss) from equity investments in subsidiaries	(3,695)	(2,411)
Total other expense	(3,695)	(2,411)
Loss before income taxes	(3,665)	(2,411)
(Benefit) provision for income taxes	0	0
Net loss	(3,665)	(2,411)
Change in foreign currency translation adjustment	0	0
Total comprehensive loss	$ (3,665)	$ (2,411)

Condensed Consolidating State47

Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Cash Flow Statements, Captions [Line Items]
Net loss	$ (1,759)	$ (1,465)
Adjustments for non-cash items	5,658	5,544
Net changes in operating assets and liabilities, net of acquired businesses	(11,143)	(13,355)
Intercompany activity	0	0
Net cash used by operating activities	(7,244)	(9,276)
Additions to property, plant and equipment	(2,418)	(6,879)
Proceeds from sale of property, plant and equipment	6	0
Net cash used by investing activities	(2,412)	(6,879)
Proceeds from Issuance of debt	1,465	0
Principal payments on long-term debt and notes payable	(874)	(614)
Advances on revolving line of credit	2,000	36,000
Payments on revolving line of credit	(2,000)	(24,500)
Payments for debt issuance cost	0	(94)
Net cash provided by financing activities	591	10,792
Net decrease in cash and cash equivalents	(9,065)	(5,363)
Cash and cash equivalents, beginning of period	10,504	7,927
Cash and cash equivalents, end of period	1,439	2,564
LMIA(Guarantor Parent)
Condensed Cash Flow Statements, Captions [Line Items]
Net loss	(1,802)	(1,465)
Adjustments for non-cash items	(2,526)	(3,175)
Net changes in operating assets and liabilities, net of acquired businesses	(8,787)	(3,583)
Intercompany activity	4,776	(8,147)
Net cash used by operating activities	(8,339)	(16,370)
Additions to property, plant and equipment	(778)	(25)
Proceeds from sale of property, plant and equipment	0
Net cash used by investing activities	(778)	(25)
Proceeds from Issuance of debt	0
Principal payments on long-term debt and notes payable	(22)	(83)
Advances on revolving line of credit	2,000	36,000
Payments on revolving line of credit	(2,000)	(24,500)
Payments for debt issuance cost		(94)
Net cash provided by financing activities	(22)	11,323
Net decrease in cash and cash equivalents	(9,139)	(5,072)
Cash and cash equivalents, beginning of period	10,251	7,058
Cash and cash equivalents, end of period	1,112	1,986
Guarantor Subsidiaries
Condensed Cash Flow Statements, Captions [Line Items]
Net loss	3,708	2,411
Adjustments for non-cash items	4,519	6,308
Net changes in operating assets and liabilities, net of acquired businesses	(2,356)	(9,772)
Intercompany activity	(4,776)	8,147
Net cash used by operating activities	1,095	7,094
Additions to property, plant and equipment	(1,640)	(6,854)
Proceeds from sale of property, plant and equipment	6
Net cash used by investing activities	(1,634)	(6,854)
Proceeds from Issuance of debt	1,465
Principal payments on long-term debt and notes payable	(852)	(531)
Advances on revolving line of credit	0	0
Payments on revolving line of credit	0	0
Payments for debt issuance cost		0
Net cash provided by financing activities	613	(531)
Net decrease in cash and cash equivalents	74	(291)
Cash and cash equivalents, beginning of period	253	869
Cash and cash equivalents, end of period	327	578
Consolidating/Eliminating Entries
Condensed Cash Flow Statements, Captions [Line Items]
Net loss	(3,665)	(2,411)
Adjustments for non-cash items	3,665	2,411
Net changes in operating assets and liabilities, net of acquired businesses	0	0
Intercompany activity	0	0
Net cash used by operating activities	0	0
Additions to property, plant and equipment	0	0
Proceeds from sale of property, plant and equipment	0
Net cash used by investing activities	0	0
Proceeds from Issuance of debt	0
Principal payments on long-term debt and notes payable	0	0
Advances on revolving line of credit	0	0
Payments on revolving line of credit	0	0
Payments for debt issuance cost		0
Net cash provided by financing activities	0	0
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$ 0	$ 0