Mistras (MG) 10-Q 9 Oct 13 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Aug. 31, 2013	Oct. 01, 2013
Document and Entity Information
Entity Registrant Name	Mistras Group, Inc.
Entity Central Index Key	1436126
Document Type	10-Q
Document Period End Date	31-Aug-13
Amendment Flag	FALSE
Current Fiscal Year End Date	-26
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		28,375,135
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Current Assets
Cash and cash equivalents	$6,933	$7,802
Accounts receivable, net	106,258	108,554
Inventories, net	12,981	12,504
Deferred income taxes	2,710	2,621
Prepaid expenses and other current assets	8,806	8,156
Total current assets	137,688	139,637
Property, plant and equipment, net	68,076	68,419
Intangible assets, net	50,560	52,428
Goodwill	115,325	115,270
Other assets	1,019	906
Total assets	372,668	376,660
Current Liabilities
Accounts payable	8,476	8,490
Accrued expenses and other current liabilities	44,875	47,839
Current portion of long-term debt	7,405	7,418
Current portion of capital lease obligations	6,945	6,766
Income taxes payable	1,702	1,703
Total current liabilities	69,403	72,216
Long-term debt, net of current portion	45,495	52,849
Obligations under capital leases, net of current portion	11,278	10,923
Deferred income taxes	12,651	11,614
Other long-term liabilities	17,054	18,778
Total liabilities	155,881	166,380
Commitments and contingencies
Equity
Preferred stock, 10,000,000 shares authorized
Common stock, $0.01 par value, 200,000,000 shares authorized, 28,375,135 and 28,210,862 shares issued and outstanding as of August 31, 2013 and May 31, 2013, respectively	283	282
Additional paid-in capital	196,377	195,241
Retained earnings	24,623	18,982
Accumulated other comprehensive loss	-4,717	-4,452
Total Mistras Group, Inc. stockholders' equity	216,566	210,053
Noncontrolling interests	221	227
Total equity	216,787	210,280
Total liabilities and equity	$372,668	$376,660

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Aug. 31, 2013	31-May-13
Condensed Consolidated Balance Sheets
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	28,375,135	28,210,862
Common stock, shares outstanding	28,375,135	28,210,862

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Revenues:
Services	$128,342	$99,225
Products and systems	7,496	14,162
Total revenues	135,838	113,387
Cost of revenues:
Cost of services	88,624	70,516
Cost of products and systems sold	3,629	5,010
Depreciation related to services	4,050	3,976
Depreciation related to products and systems	258	168
Total cost of revenues	96,561	79,670
Gross profit	39,277	33,717
Selling, general and administrative expenses	28,699	23,492
Research and engineering	643	517
Depreciation and amortization	2,457	1,895
Acquisition-related expense, net	-2,097	107
Income from operations	9,575	7,706
Interest expense	745	760
Income before provision for income taxes	8,830	6,946
Provision for income taxes	3,195	2,655
Net income	5,635	4,291
Net loss (income) attributable to noncontrolling interests, net of taxes	6	-10
Net income attributable to Mistras Group, Inc.	$5,641	$4,281
Earnings per common share
Basic (in dollars per share)	$0.20	$0.15
Diluted (in dollars per share)	$0.19	$0.15
Weighted average common shares outstanding:
Basic (in shares)	28,241	28,045
Diluted (in shares)	29,109	29,000

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Condensed Consolidated Statements of Comprehensive Income
Net income	$5,635	$4,291
Other comprehensive (loss), net of tax:
Foreign currency translation adjustments	-265	-2,031
Comprehensive income	5,370	2,260
Comprehensive income (loss) attributable to noncontrolling interest	6	-10
Comprehensive income attributable to Mistras Group, Inc.	$5,364	$2,270

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Cash flows from operating activities
Net income	$5,635	$4,291
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	6,765	6,039
Deferred income taxes	866	694
Provision for doubtful accounts	115	-210
(Gain) loss on sale of assets	-27	119
Amortization of deferred financing costs	31	31
Share-based compensation expense	1,707	1,634
Fair value adjustment to contingent consideration liabilities	-2,165	-121
Foreign currency (gain) loss	-296	95
Changes in operating assets and liabilities, net of effect of acquisitions of businesses:
Accounts receivable	1,794	16,240
Inventories	-493	613
Prepaid expenses and other current assets	-818	854
Other assets	-126	677
Accounts payable	126	-2,762
Accrued expenses and other current liabilities	-1,569	-6,372
Income taxes payable	-7	-276
Net cash provided by operating activities	11,538	21,546
Cash flows from investing activities
Purchase of property, plant and equipment	-2,514	-2,714
Purchase of intangible assets	-142	-228
Proceeds from sale of equipment	140	325
Net cash used in investing activities	-2,516	-2,617
Cash flows from financing activities
Repayment of capital lease obligations	-1,893	-1,644
Repayment of long-term debt	-911	-1,621
Net (repayments) against current revolver	-6,569	-15,000
Payment of contingent consideration for business acquisitions	-125	-1,113
Taxes paid related to net share settlement of equity awards	-998	-807
Excess tax benefit from stock compensation	124	300
Proceeds from the exercise of stock options	303	99
Net cash used in financing activities	-10,069	-19,786
Effect of exchange rate changes on cash and cash equivalents	178	-224
Net change in cash and cash equivalents	-869	-1,081
Cash and cash equivalents
Beginning of period	7,802	8,410
End of period	6,933	7,329
Supplemental disclosure of cash paid
Interest	732	746
Income taxes	1,346	1,122
Noncash investing and financing
Equipment acquired through capital lease obligations	$2,475	$1,555

Description_of_Business_and_Ba

Description of Business and Basis of Presentation	3 Months Ended
	Aug. 31, 2013
Description of Business and Basis of Presentation
Description of Business and Basis of Presentation	1.                                      Description of Business and Basis of Presentation
	Description of Business
	Mistras Group, Inc. and subsidiaries (the Company) is a leading “one source” global provider of technology-enabled asset protection solutions used to evaluate the structural integrity and reliability of critical energy, industrial and public infrastructure. The Company combines industry-leading products and technologies, expertise in mechanical integrity (MI), non-destructive testing (NDT) services, destructive testing services, and proprietary data analysis software to deliver a comprehensive portfolio of customized solutions, ranging from routine inspections to complex, plant-wide asset integrity assessments and management. These mission critical solutions enhance customers’ ability to extend the useful life of their assets, increase productivity, minimize repair costs, comply with governmental safety and environmental regulations, manage risk and avoid catastrophic disasters. The Company serves a global customer base of companies with asset-intensive infrastructure, including companies in the oil and gas, fossil and nuclear power, alternative and renewable energy, public infrastructure, chemicals, aerospace and defense, transportation, primary metals and metalworking, pharmaceuticals and food processing industries.
	Basis of Presentation
	The condensed consolidated financial statements contained in this report are unaudited. In the opinion of management, the condensed consolidated financial statements include all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the results for the interim periods of the fiscal years ending May 31, 2014 and 2013. Reference to a fiscal year means the fiscal year ended May 31. Certain items included in these statements are based on management’s estimates. Actual results may differ from those estimates. The results of operations for any interim period are not necessarily indicative of the results expected for the year. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the notes to consolidated financial statements contained in the Company’s Annual Report on Form 10-K (“Annual Report”) for fiscal 2013, as filed with the Securities and Exchange Commission on August 14, 2013.
	Principles of Consolidation
	The accompanying unaudited condensed consolidated financial statements include the accounts of Mistras Group, Inc. and its wholly and majority-owned subsidiaries. Where the Company’s ownership interest is less than 100%, the noncontrolling interests are reported in stockholders’ equity in the accompanying consolidated balance sheets. The noncontrolling interests in operating results, net of tax, is classified separately in the accompanying consolidated statements of income.
	All significant intercompany accounts and transactions have been eliminated in consolidation. Mistras Group, Inc.’s and its subsidiaries’ fiscal years end on May 31 except for the companies in the International segment, which end on April 30. Accordingly, the Company’s International segment subsidiaries are consolidated on a one-month lag. Therefore, in the fiscal quarter and year of acquisition, results of acquired subsidiaries in the International segment are generally included in consolidated results for one less month than the actual number of months from the acquisition date to the end of the reporting period. Management does not believe that any events occurred during the one-month lag period that would have a material effect on the Company’s consolidated financial statements as of or for any period presented.
	Reclassification
	Certain amounts in prior periods have been reclassified to conform to the current year presentation. Such reclassifications did not have a material effect on the Company’s financial condition or results of operations as previously reported.
	For the three months ended August 31, 2013, the Company reclassified $0.3 million related to interest accretion imputed on its acquisition-related contingent consideration liabilities from interest expense to acquisition-related expense, net, which is a component of income from operations. See Note 4 — Acquisitions for further discussion with regards to acquisition related expense, net.
	Significant Accounting Policies
	Our significant accounting policies are disclosed in Note 2 — Summary of Significant Accounting Policies in our Annual Report. On an ongoing basis, we evaluate our estimates and assumptions, including, among other things those related to revenue recognition, valuations of accounts receivable, long-lived assets, goodwill, deferred tax assets and uncertain tax positions. Since the date of our Annual Report, there have been no material changes to our significant accounting policies.
	Recent Accounting Pronouncements
	In February 2013, the FASB issued Accounting Standard Update (ASU) 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which expands the disclosure requirements for amounts reclassified out of accumulated other comprehensive income. The update requires an entity to present either parenthetically on the face of the financial statement where net income is presented or in the notes to the financial statements, the effect of significant items reclassified in their entirety from accumulated other comprehensive income and identification of the respective line items effecting net income for instances when reclassification is required under GAAP. For items that are not required by GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures as required by GAAP. The update does not change the current requirements for reporting net income or other comprehensive income in financial statements and is effective for annual and interim reporting periods beginning after December 15, 2012. The adoption of this pronouncement did not have a material impact on the Company’s consolidated financial statements.
	Other recently issued accounting pronouncements did not, or are not believed by management to likely have a material impact on the Company’s current or future consolidated financial statements.

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Aug. 31, 2013
Share-Based Compensation.
Share-Based Compensation	2.             Share-Based Compensation
	The Company recognized share-based compensation expense related to stock option awards of approximately $0.7 million and $0.8 million for three months ended August 31, 2013 and 2012, respectively. As of August 31, 2013, there was approximately $0.1 million of unrecognized compensation costs, net of estimated forfeitures, related to stock option awards, which are expected to be recognized over a remaining weighted average period of 1.2 years. Cash proceeds from, and the aggregate intrinsic value of, stock options exercised during the three months ended August 31, 2013 and 2012 were as follows:
		Three months ended August 31,
		2013		2012
	Cash proceeds from options exercised	$	303	$	99
	Aggregate intrinsic value of options exercised	$	326	$	126
	No stock options were granted during the three months ended August 31, 2013 or August 31, 2012.
	The Company also recognized approximately $0.8 million and $0.6 million in share-based compensation expense related to restricted stock unit awards during the first quarter of fiscal 2014 and 2013, respectively. As of August 31, 2013, there was approximately $11.1 million of unrecognized compensation costs, net of estimated forfeitures, related to restricted stock unit awards, which are expected to be recognized over a remaining weighted average period of 2.9 years.
	During the first quarter of fiscal 2014 and 2013 respectively, the Company granted approximately 10,000 and 13,000 shares of fully-vested common stock to its five non-employee directors, in connection with its non-employee director compensation plan. These shares had a grant date fair value of approximately $0.2 million and $0.3 million, respectively, which was recorded as share-based compensation expense during the quarter ended August 31, 2013 and 2012.
	During the first quarter of fiscal 2014 and 2013 respectively, approximately 175,000 and 123,000 restricted stock units vested. The fair value of these units was $3.2 million and $1.9 million, respectively. Upon vesting, restricted stock units are generally net share-settled to cover the required withholding tax and the remaining amount is converted into an equivalent number of shares of common stock. The restricted stock units that vested in the first quarters of fiscal 2014 and 2013 were net-share settled such that the Company withheld shares with value equivalent to the employees’ minimum statutory obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities. The Company withheld approximately 54,000 and 37,000 shares in the first quarter of fiscal 2014 and 2013, respectively. The shares withheld were based on the value of the restricted stock units on their vesting date as determined by the Company’s closing stock price. Total payments for the employees’ tax obligations to the taxing authorities were $1.0 million and $0.8 million and are reflected as a financing activity within the condensed consolidated statements of cash flows for the three months ended August 31, 2013 and 2012, respectively. These net-share settlements had the effect of share repurchases by the Company as they reduced and retired the number of shares that would have otherwise been issued as a result of the vesting and did not represent an expense to the Company.

Earnings_per_Share

Earnings per Share	3 Months Ended
	Aug. 31, 2013
Earnings per Share
Earnings per Share	3.             Earnings per Share
	Basic earnings per share is computed by dividing net income attributable to stockholders by the weighted average number of shares outstanding during the period. Diluted earnings per share is computed by dividing net income attributable to stockholders by the sum of (1) the weighted average number of shares of common stock outstanding during the period, and (2) the dilutive effect of assumed conversion of equity awards using the treasury stock method. With respect to the number of weighted average shares outstanding (denominator), diluted shares reflects: (i) only the exercise of options to acquire common stock to the extent that the options’ exercise prices are less than the average market price of common shares during the period and (ii) the pro forma vesting of restricted stock units.
	The following table sets forth the computations of basic and diluted earnings per share:
		Three months ended August 31,
		2013		2012
	Basic earnings per share
	Numerator:
	Net income attributable to Mistras Group, Inc.	$	5,641	$	4,281
	Denominator:
	Weighted average common shares outstanding	28,241		28,045
	Basic earnings per share	$	0.2	$	0.15
	Diluted earnings per share:
	Numerator:
	Net income attributable to Mistras Group, Inc.	$	5,641	$	4,281
	Denominator:
	Weighted average common shares outstanding	28,241		28,045
	Dilutive effect of stock options outstanding	723		806
	Dilutive effect of restricted stock units outstanding	145		149
		29,109		29,000
	Diluted earnings per share	$	0.19	$	0.15

Acquisitions

Acquisitions	3 Months Ended
	Aug. 31, 2013
Acquisitions
Acquisitions	4.             Acquisitions
	During the three months ended August 31, 2013, the Company incurred acquisition-related costs of $0.1 million in connection with due diligence, professional fees, and other expenses for certain fiscal 2014 acquisition activity. Additionally, the Company adjusted the fair value of certain acquisition-related contingent consideration liabilities. For the three months ended August 31, 2013, the adjustments resulted in a net decrease of approximately $2.2 million to the Company’s acquisition-related contingent consideration liabilities, which were approximately $13.0 million as of August 31, 2013 and recorded on the balance sheet in accrued expenses and other liabilities. These adjustments also resulted in a corresponding net increase to income from operations of approximately $2.2 million for the three months ended August 31, 2013. The fair value adjustments to acquisition-related contingent consideration liabilities and the acquisition-related transaction costs have been classified as acquisition-related expense, net, in the statement of income for the three months ended August 31, 2013.
	During the three months ended August 31, 2012, the Company incurred acquisition-related costs of $0.6 million in connection with due diligence, professional fees, and other expenses for its fiscal 2013 acquisition activity. Additionally, the Company adjusted the fair value of certain acquisition-related contingent consideration liabilities. For the three months ended August 31, 2012, the adjustments resulted in a net decrease of approximately $0.8 million to the Company’s acquisition-related contingent consideration liabilities, which were approximately $11.6 million as of August 31, 2012 and recorded on the balance sheet in accrued expenses and other liabilities. These adjustments also resulted in a corresponding net increase to income from operations of approximately $0.8 for the three months ended August 31, 2013. The Company recorded interest accretion related to its contingent consideration liabilities of $0.3 million for the three months ended August 31, 2012. The fair value adjustments to acquisition-related contingent consideration liabilities, related interest accretion and the acquisition-related transaction costs have been classified as acquisition-related expense, net, in the statement of operations for the three months ended August 31, 2012.
	Interest accretion during the three months ended August 31, 2012 was previously recorded in interest expense.
	The unaudited pro forma information for the periods set forth below gives effect to the Company’s fiscal 2013 acquisitions as if they had occurred at the beginning of each period presented. The pro forma information is presented for informational purposes only and is not necessarily indicative of the results of operations that actually would have been achieved had the acquisitions been consummated as of that time (unaudited, in thousands):
		Three months ended August 31,
		2013		2012
	Revenues	$	135,838	$	133,667
	Income from operations	$	9,575	$	9,565
	The Company did not complete any acquisitions during the three months ended August 31, 2013.

Accounts_Receivable_net

Accounts Receivable, net	3 Months Ended
	Aug. 31, 2013
Accounts Receivable, net
Accounts Receivable, net	5.             Accounts Receivable, net
	Accounts receivable consist of the following:
		August 31, 2013			May 31, 2013
	Trade accounts receivable	$	108,224		$	110,438
	Allowance for doubtful accounts	(1,966		)	(1,884		)
	Total	$	106,258		$	108,554

Inventories_net

Inventories, net	3 Months Ended
	Aug. 31, 2013
Inventories, net
Inventories, net	6.                                      Inventories, net
	Inventories consist of the following:
		August 31, 2013		May 31, 2013
	Raw materials	$	3,440	$	3,332
	Work in process	2,000		2,310
	Finished goods	4,580		4,355
	Services-related consumable supplies	2,961		2,507
	Total	$	12,981	$	12,504

Property_Plant_and_Equipment_n

Property, Plant and Equipment, net	3 Months Ended
	Aug. 31, 2013
Property, Plant and Equipment, net
Property, Plant and Equipment, net	7.             Property, Plant and Equipment, net
	Property, plant and equipment consist of the following:
		Useful Life	August 31, 2013			May 31, 2013
		(Years)
	Land		$	1,939		$	1,943
	Building and improvements	30-40	21,109			20,973
	Office furniture and equipment	8-May	5,748			5,543
	Machinery and equipment	7-May	124,665			121,563
			153,461			150,022
	Accumulated depreciation and amortization		(85,385		)	(81,603		)
	Property, plant and equipment, net		$	68,076		$	68,419
	Depreciation expense for the three months ended August 31, 2013 and 2012 was approximately $4.6 million and $4.4 million, respectively.

Accrued_Expenses_and_Other_Cur

Accrued Expenses and Other Current Liabilities	3 Months Ended
	Aug. 31, 2013
Accrued Expenses and Other Current Liabilities
Accrued Expenses and Other Current Liabilities	8.                                      Accrued Expenses and Other Current Liabilities
	Accrued expenses and other current liabilities consist of the following:
		August 31, 2013		May 31, 2013
	Accrued salaries, wages and related employee benefits	$	21,073	$	23,662
	Contingent consideration	2,840		5,144
	Accrued workers’ compensation and health benefits	3,797		3,667
	Deferred revenues	2,288		2,623
	Other accrued expenses	14,877		12,743
	Total	$	44,875	$	47,839

LongTerm_Debt

Long-Term Debt	3 Months Ended
	Aug. 31, 2013
Long-Term Debt
Long-Term Debt	9.                                      Long-Term Debt
	Long-term debt consists of the following:
		August 31, 2013			May 31, 2013
	Senior credit facility	$	32,999		$	39,567
	Notes payable	14,603			15,740
	Other	5,298			4,960
	Total debt	52,900			60,267
	Less: Current portion	(7,405		)	(7,418		)
	Long-term debt, net of current portion	$	45,495		$	52,849
	Senior Credit Facility
	In December 2011, the Company entered into a Third Amended and Restated Credit Agreement (Credit Agreement) with Bank of America, N.A., as agent for the lenders and a lender, and JPMorgan Chase Bank, N.A., Keybank National Association and TD Bank, N.A., as lenders. The Credit Agreement provides the Company with a $125.0 million revolving line of credit, which, under certain circumstances, can be increased to $150.0 million. The Credit Agreement has a maturity date of December 20, 2016. The Company may borrow up to $30.0 million in non-U.S. dollar currencies and use up to $10.0 million of the credit limit for the issuance of letters of credit. As of August 31, 2013, there were outstanding borrowings of $33.0 million and a total of $4.5 million of outstanding letters of credit under the current revolving credit facility.
	Loans under the Credit Agreement bear interest at LIBOR plus an applicable LIBOR margin ranging from 1% to 2%, or a base rate less a margin of 0.25% to 1.25%, at the option of the Company, or based upon the Company’s Funded Debt Leverage Ratio. Funded Debt Leverage Ratio is generally the ratio of (1) all outstanding indebtedness for borrowed money and other interest-bearing indebtedness as of the date of determination to (2) EBITDA (which is (a) net income, less (b) income (or plus loss) from discontinued operations and extraordinary items, plus (c) income tax expenses, plus (d) interest expense, plus (e) depreciation, depletion, and amortization (including non-cash loss on retirement of assets), plus (f) stock compensation expense, less (g) cash expense related to stock compensation, plus or minus certain other adjustments) for the period of four consecutive fiscal quarters immediately preceding the date of determination. The Company has the benefit of the lowest margin if its Funded Debt Leverage Ratio is equal to or less than 0.5 to 1, and the margin increases as the ratio increases, to the maximum margin if the ratio is greater than 2.5 to 1. The Company will also bear additional costs for market disruption, regulatory changes effecting the lenders’ funding costs, and default pricing of an additional 2% interest rate margin if the Funded Debt Leverage Ratio exceeds 3.0 to 1. Amounts borrowed under the Credit Agreement are secured by liens on substantially all of the assets of the Company.
	The Credit Agreement contains financial covenants requiring that the Company maintain a Funded Debt Leverage Ratio of less than 3.0 to 1 and an Interest Coverage Ratio of at least 3.0 to 1. Interest Coverage Ratio means the ratio, as of any date of determination, of (a) EBITDA for the 12 month period immediately preceding the date of determination, to (b) all interest, premium payments, debt discount, fees, charges and related expenses of the Company and its subsidiaries in connection with borrowed money (including capitalized interest) or in connection with the deferred purchase price of assets, in each case to the extent treated as interest in accordance with GAAP, paid during the 12 month period immediately preceding the date of determination. The Credit Agreement also limits the Company’s ability to, among other things, create liens, make investments, incur more indebtedness, merge or consolidate, make dispositions of property, pay dividends and make distributions to stockholders, enter into a new line of business, enter into transactions with affiliates and enter into burdensome agreements. The Credit Agreement does not limit the Company’s ability to acquire other businesses or companies except that the acquired business or company must be in its line of business, the Company must be in compliance with the financial covenants on a pro forma basis after taking into account the acquisition, and, if the acquired business is a separate subsidiary, in certain circumstances the lenders will receive the benefit of a guaranty of the subsidiary and liens on its assets and a pledge of its stock.
	As of August 31, 2013, the Company was in compliance with the terms of the credit agreement, and expects to be in compliance for the foreseeable future.
	Notes Payable and Other
	In connection with acquisitions through end of fiscal 2013, the Company issued subordinated notes payable to the sellers. The maturity of these notes range from three to five years from the date of acquisition with stated interest rates ranging from 0% to 4%. The Company has discounted these obligations to reflect a 2% to 4% market interest rate. Unamortized discount on the notes was de minimis as of August 31, 2013 and May 31, 2013. Amortization is recorded as interest expense in the condensed consolidated statements of income.
	The Company has evaluated current market conditions and borrower credit quality and has determined that the carrying value of its long-term debt approximated fair value. The fair value of the Company’s notes payable and capital lease obligations approximates their carrying amounts based on anticipated interest rates which management believes would currently be available to the Company for similar issues of debt.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Aug. 31, 2013
Fair Value Measurements
Fair Value Measurements	10.          Fair Value Measurements
	The Company performs fair value measurements in accordance with the guidance provided by ASC 820, Fair Value Measurements and Disclosures. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. It also establishes a three level hierarchy that prioritizes the inputs used to measure fair value. The three levels of the hierarchy are defined as follows:
	Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.
	Level 2 — Observable inputs other than quoted prices included in Level 1, including quoted prices for similar assets or liabilities in active markets, quoted prices for identical assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability and inputs derived principally from or corroborated by observable market data.
	Level 3 — Unobservable inputs reflecting the Company’s own assumptions about inputs that market participants would use in pricing the asset or liability based on the best information available.
	In accordance with the fair value hierarchy described above, the following table shows the fair value of the Company’s financial liabilities that are required to be remeasured at fair value on a recurring basis:
		August 31, 2013
		Level 1		Level 2		Level 3		Total
	Liabilities:
	Contingent consideration	$	—	$	—	$	13,038	$	13,038
	Total Liabilities	$	—	$	—	$	13,038	$	13,038
		May 31, 2013
		Level 1		Level 2		Level 3		Total
	Liabilities:
	Contingent consideration	$	—	$	—	$	15,438	$	15,438
	Total Liabilities	$	—	$	—	$	15,438	$	15,438
	The fair value of contingent consideration liabilities that was classified as Level 3 in the table above was estimated using a discounted cash flow technique with significant inputs that are not observable in the market and thus represents a Level 3 fair value measurement as defined in ASC 820. The significant inputs in the Level 3 measurement not supported by market activity include the probability assessments of expected future cash flows related to the acquired businesses, appropriately discounted considering the uncertainties associated with the obligation, and as calculated in accordance with the terms of the acquisition agreements.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Aug. 31, 2013
Commitments and Contingencies
Commitments and Contingencies	11.                               Commitments and Contingencies
	Litigation
	The Company is subject to periodic lawsuits, investigations and claims that arise in the ordinary course of business. Although the Company cannot predict with certainty the ultimate resolution of lawsuits, investigations and claims asserted against it, the Company believes that, except for the matters discussed below, the reasonably possible range of loss for all other pending legal proceeding to which the Company is a party in the aggregate is immaterial. The costs of defense and amounts that may be paid in such matters may be covered by insurance.
	In January 2012, the Company received notice of a governmental investigation concerning an environmental incident which occurred in February 2011 outside on the premises of the Company’s Cudahy, California location. No human injury or property damage was reported or appears to have been caused as a result of this incident. While management cannot predict the ultimate outcome of this matter, based on its internal investigation to date, the Company does not believe the outcome will have a material effect on its financial condition or results of operations.
	During fiscal 2013, the Company performed radiography work on the construction of a pipeline project in Georgia.  The Company has received notice that the pipeline project owner contends that certain of the x-ray images the Company’s technicians prepared regarding the project did not meet the code quality interpretation standards required by API (American Petroleum Institute) 1103. The project owner is claiming damages as a result of the alleged quality defects of the Company’s x-ray images. This matter is in the early stages of investigation and no lawsuit has yet to be filed.  At the present time, the Company is unable to determine the likely outcome or reasonably estimate the amount or range of potential liability related to this matter, and accordingly, has not established any reserves for this matter.
	Acquisition-related contingencies
	The Company is liable for contingent consideration in connection with certain of its acquisitions. As of August 31, 2013, total potential acquisition-related contingent consideration ranged from zero to $23.9 million and would be payable upon the achievement of specific performance metrics by certain of the acquired companies over the next five years of operations. See Note 4 - Acquisitions and Note 9 - Long-Term Debt to these consolidated financial statements for further discussion of the Company’s acquisitions.

Segment_Disclosure

Segment Disclosure	3 Months Ended
	Aug. 31, 2013
Segment Disclosure
Segment Disclosure	12.                               Segment Disclosure
	The Company’s three operating segments are:
	·                  Services. This segment provides asset protection solutions primarily in North America with the largest concentration in the United States and the Canadian services business, consisting primarily of non-destructive testing and inspection services that are used to evaluate the structural integrity and reliability of critical energy, industrial and public infrastructure.
	·                  International. This segment offers services, products and systems similar to those of the Company’s other two segments to global markets, principally in Europe, the Middle East, Africa, Asia and South America, but not to customers in China and South Korea, which are served by the Products and Systems segment.
	·                  Products and Systems. This segment designs, manufactures, sells, installs and services the Company’s asset protection products and systems, including equipment and instrumentation, predominantly in the United States.
	Allocations for general corporate services, including accounting, audit, and contract management, that are provided to the segments are reported within Corporate and eliminations. Sales to the International segment from the Products and Systems segment and subsequent sales by the International segment of the same items are recorded and reflected in the operating performance of both segments. Additionally, engineering charges and royalty fees charged to the Services and International segments by the Products and Systems segment are reflected in the operating performance of each segment. All such intersegment transactions are eliminated in the Company’s consolidated financial reporting.
	The accounting policies of the reportable segments are the same as those described in Note 1 — Description of Business and Basis of Presentation. Segment income from operations is determined based on internal performance measures used by the Chief Executive Officer, who is the chief operating decision maker, to assess the performance of each business in a given period and to make decisions as to resource allocations. In connection with that assessment, the Chief Executive Officer may exclude matters such as charges for share-based compensation and certain other acquisition-related charges and balances, technology and product development costs, certain gains and losses from dispositions, and litigation settlements or other charges. Certain general and administrative costs such as human resources, information technology and training are allocated to the segments. Segment income from operations also excludes interest and other financial charges and income taxes. Corporate and other assets are comprised principally of cash, deposits, property, plant and equipment, domestic deferred taxes, deferred charges and other assets. Corporate loss from operations consists of depreciation on the corporate office facilities and equipment, administrative charges related to corporate personnel and other charges that cannot be readily identified for allocation to a particular segment.
	Selected financial information by segment for the periods shown was as follows:
		Three months ended August 31,
		2013			2012
	Revenues
	Services	$	95,810		$	82,397
	International	37,759			24,429
	Products and Systems	6,585			9,534
	Corporate and eliminations	(4,316		)	(2,973		)
		$	135,838		$	113,387
	Revenues by operating segment include intercompany transactions, which are eliminated in Corporate and eliminations. The Services segment had sales to other operating segments of $2.2 million and $1.1 million for the three months ended August 31, 2013 and 2012, respectively. The International segment had sales to other operating segments of $0.1 million for each of the three month periods ended August 31, 2013 and 2012. The Products and Systems segment had sales to other operating segments of $1.9 million and $1.7 million for the three months ended August 31, 2013 and 2012, respectively.
		Three months ended August 31,
		2013			2012
	Gross profit
	Services	$	26,747		$	20,940
	International	10,120			7,081
	Products and Systems	2,384			5,245
	Corporate and eliminations	26			451
		$	39,277		$	33,717
		Three months ended August 31,
		2013			2012
	Income from operations
	Services	$	10,846		$	6,766
	International	1,815			1,591
	Products and Systems	591			3,080
	Corporate and eliminations	(3,677		)	(3,731		)
		$	9,575		$	7,706
	Income by operating segment includes intercompany transactions, which are eliminated in Corporate and eliminations.
		Three months ended August 31,
		2013			2012
	Depreciation and amortization
	Services	$	4,235		$	4,524
	International	1,922			1,047
	Products and Systems	583			491
	Corporate and eliminations	25			(23		)
		$	6,765		$	6,039
		August 31, 2013			May 31, 2013
	Intangible assets, net
	Services	$	13,450		$	14,527
	International	27,122			27,520
	Products and Systems	9,270			9,600
	Corporate and eliminations	718			781
		$	50,560		$	52,428
		August 31, 2013			May 31, 2013
	Goodwill
	Services	$	61,127		$	61,285
	International	41,001			40,788
	Products and Systems	13,197			13,197
		$	115,325		$	115,270
		August 31, 2013			May 31, 2013
	Total assets
	Services	$	195,196		$	200,326
	International	139,961			138,108
	Products and Systems	36,715			37,948
	Corporate and eliminations	796			278
		$	372,668		$	376,660
	Revenues by geographic area for the three months ended August 31, 2013 and 2012, respectively, were as follows:
		Three months ended August 31,
	2013			2012
Revenues
United States	$	83,157		$	76,275
Other Americas	13,420			11,788
Europe	35,406			16,677
Asia-Pacific	3,855			8,647
	$	135,838		$	113,387

Description_of_Business_and_Ba1

Description of Business and Basis of Presentation (Policies)	3 Months Ended
	Aug. 31, 2013
Description of Business and Basis of Presentation
Basis of Presentation	Basis of Presentation
	The condensed consolidated financial statements contained in this report are unaudited. In the opinion of management, the condensed consolidated financial statements include all adjustments, which are of a normal recurring nature, necessary for a fair presentation of the results for the interim periods of the fiscal years ending May 31, 2014 and 2013. Reference to a fiscal year means the fiscal year ended May 31. Certain items included in these statements are based on management’s estimates. Actual results may differ from those estimates. The results of operations for any interim period are not necessarily indicative of the results expected for the year. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the notes to consolidated financial statements contained in the Company’s Annual Report on Form 10-K (“Annual Report”) for fiscal 2013, as filed with the Securities and Exchange Commission on August 14, 2013.
Principles of Consolidation	Principles of Consolidation
	The accompanying unaudited condensed consolidated financial statements include the accounts of Mistras Group, Inc. and its wholly and majority-owned subsidiaries. Where the Company’s ownership interest is less than 100%, the noncontrolling interests are reported in stockholders’ equity in the accompanying consolidated balance sheets. The noncontrolling interests in operating results, net of tax, is classified separately in the accompanying consolidated statements of income.
	All significant intercompany accounts and transactions have been eliminated in consolidation. Mistras Group, Inc.’s and its subsidiaries’ fiscal years end on May 31 except for the companies in the International segment, which end on April 30. Accordingly, the Company’s International segment subsidiaries are consolidated on a one-month lag. Therefore, in the fiscal quarter and year of acquisition, results of acquired subsidiaries in the International segment are generally included in consolidated results for one less month than the actual number of months from the acquisition date to the end of the reporting period. Management does not believe that any events occurred during the one-month lag period that would have a material effect on the Company’s consolidated financial statements as of or for any period presented.
Reclassification	Reclassification
	Certain amounts in prior periods have been reclassified to conform to the current year presentation. Such reclassifications did not have a material effect on the Company’s financial condition or results of operations as previously reported.
	For the three months ended August 31, 2013, the Company reclassified $0.3 million related to interest accretion imputed on its acquisition-related contingent consideration liabilities from interest expense to acquisition-related expense, net, which is a component of income from operations. See Note 4 — Acquisitions for further discussion with regards to acquisition related expense, net.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In February 2013, the FASB issued Accounting Standard Update (ASU) 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income, which expands the disclosure requirements for amounts reclassified out of accumulated other comprehensive income. The update requires an entity to present either parenthetically on the face of the financial statement where net income is presented or in the notes to the financial statements, the effect of significant items reclassified in their entirety from accumulated other comprehensive income and identification of the respective line items effecting net income for instances when reclassification is required under GAAP. For items that are not required by GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures as required by GAAP. The update does not change the current requirements for reporting net income or other comprehensive income in financial statements and is effective for annual and interim reporting periods beginning after December 15, 2012. The adoption of this pronouncement did not have a material impact on the Company’s consolidated financial statements.
	Other recently issued accounting pronouncements did not, or are not believed by management to likely have a material impact on the Company’s current or future consolidated financial statements.

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Aug. 31, 2013
Share-Based Compensation.
Schedule of cash proceeds from, and the aggregate intrinsic value of, stock options exercised
		Three months ended August 31,
		2013		2012
	Cash proceeds from options exercised	$	303	$	99
	Aggregate intrinsic value of options exercised	$	326	$	126

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	Aug. 31, 2013
Earnings per Share
Schedule of computations of basic and diluted earnings per share
		Three months ended August 31,
		2013		2012
	Basic earnings per share
	Numerator:
	Net income attributable to Mistras Group, Inc.	$	5,641	$	4,281
	Denominator:
	Weighted average common shares outstanding	28,241		28,045
	Basic earnings per share	$	0.2	$	0.15
	Diluted earnings per share:
	Numerator:
	Net income attributable to Mistras Group, Inc.	$	5,641	$	4,281
	Denominator:
	Weighted average common shares outstanding	28,241		28,045
	Dilutive effect of stock options outstanding	723		806
	Dilutive effect of restricted stock units outstanding	145		149
		29,109		29,000
	Diluted earnings per share	$	0.19	$	0.15

Acquisitions_Tables

Acquisitions (Tables)	3 Months Ended
	Aug. 31, 2013
Acquisitions
Schedule of pro forma information of the results of operations	The pro forma information is presented for informational purposes only and is not necessarily indicative of the results of operations that actually would have been achieved had the acquisitions been consummated as of that time (unaudited, in thousands):
		Three months ended August 31,
		2013		2012
	Revenues	$	135,838	$	133,667
	Income from operations	$	9,575	$	9,565

Accounts_Receivable_net_Tables

Accounts Receivable, net (Tables)	3 Months Ended
	Aug. 31, 2013
Accounts Receivable, net
Schedule of accounts receivable
		August 31, 2013			May 31, 2013
	Trade accounts receivable	$	108,224		$	110,438
	Allowance for doubtful accounts	(1,966		)	(1,884		)
	Total	$	106,258		$	108,554

Inventories_net_Tables

Inventories, net (Tables)	3 Months Ended
	Aug. 31, 2013
Inventories, net
Schedule of inventories
		August 31, 2013		May 31, 2013
	Raw materials	$	3,440	$	3,332
	Work in process	2,000		2,310
	Finished goods	4,580		4,355
	Services-related consumable supplies	2,961		2,507
	Total	$	12,981	$	12,504

Property_Plant_and_Equipment_n1

Property, Plant and Equipment, net (Tables)	3 Months Ended
	Aug. 31, 2013
Property, Plant and Equipment, net
Schedule of Property, plant and equipment
		Useful Life	August 31, 2013			May 31, 2013
		(Years)
	Land		$	1,939		$	1,943
	Building and improvements	30-40	21,109			20,973
	Office furniture and equipment	8-May	5,748			5,543
	Machinery and equipment	7-May	124,665			121,563
			153,461			150,022
	Accumulated depreciation and amortization		(85,385		)	(81,603		)
	Property, plant and equipment, net		$	68,076		$	68,419

Accrued_Expenses_and_Other_Cur1

Accrued Expenses and Other Current Liabilities (Tables)	3 Months Ended
	Aug. 31, 2013
Accrued Expenses and Other Current Liabilities
Schedule of accrued expenses and other current liabilities
		August 31, 2013		May 31, 2013
	Accrued salaries, wages and related employee benefits	$	21,073	$	23,662
	Contingent consideration	2,840		5,144
	Accrued workers’ compensation and health benefits	3,797		3,667
	Deferred revenues	2,288		2,623
	Other accrued expenses	14,877		12,743
	Total	$	44,875	$	47,839

LongTerm_Debt_Tables

Long-Term Debt (Tables)	3 Months Ended
	Aug. 31, 2013
Long-Term Debt
Schedule of long-term debt
		August 31, 2013			May 31, 2013
	Senior credit facility	$	32,999		$	39,567
	Notes payable	14,603			15,740
	Other	5,298			4,960
	Total debt	52,900			60,267
	Less: Current portion	(7,405		)	(7,418		)
	Long-term debt, net of current portion	$	45,495		$	52,849

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Aug. 31, 2013
Fair Value Measurements
Schedule of fair value of the Company's financial liabilities that are required to be remeasured at fair value on a recurring basis
		August 31, 2013
		Level 1		Level 2		Level 3		Total
	Liabilities:
	Contingent consideration	$	—	$	—	$	13,038	$	13,038
	Total Liabilities	$	—	$	—	$	13,038	$	13,038
		May 31, 2013
		Level 1		Level 2		Level 3		Total
	Liabilities:
	Contingent consideration	$	—	$	—	$	15,438	$	15,438
	Total Liabilities	$	—	$	—	$	15,438	$	15,438

Segment_Disclosure_Tables

Segment Disclosure (Tables)	3 Months Ended
	Aug. 31, 2013
Segment Disclosure
Schedule of financial information by segment
		Three months ended August 31,
		2013			2012
	Revenues
	Services	$	95,810		$	82,397
	International	37,759			24,429
	Products and Systems	6,585			9,534
	Corporate and eliminations	(4,316		)	(2,973		)
		$	135,838		$	113,387
		Three months ended August 31,
		2013			2012
	Gross profit
	Services	$	26,747		$	20,940
	International	10,120			7,081
	Products and Systems	2,384			5,245
	Corporate and eliminations	26			451
		$	39,277		$	33,717
		Three months ended August 31,
		2013			2012
	Income from operations
	Services	$	10,846		$	6,766
	International	1,815			1,591
	Products and Systems	591			3,080
	Corporate and eliminations	(3,677		)	(3,731		)
		$	9,575		$	7,706
	Income by operating segment includes intercompany transactions, which are eliminated in Corporate and eliminations.
		Three months ended August 31,
		2013			2012
	Depreciation and amortization
	Services	$	4,235		$	4,524
	International	1,922			1,047
	Products and Systems	583			491
	Corporate and eliminations	25			(23		)
		$	6,765		$	6,039
		August 31, 2013			May 31, 2013
	Intangible assets, net
	Services	$	13,450		$	14,527
	International	27,122			27,520
	Products and Systems	9,270			9,600
	Corporate and eliminations	718			781
		$	50,560		$	52,428
		August 31, 2013			May 31, 2013
	Goodwill
	Services	$	61,127		$	61,285
	International	41,001			40,788
	Products and Systems	13,197			13,197
		$	115,325		$	115,270
		August 31, 2013			May 31, 2013
	Total assets
	Services	$	195,196		$	200,326
	International	139,961			138,108
	Products and Systems	36,715			37,948
	Corporate and eliminations	796			278
		$	372,668		$	376,660
Schedule of revenues by geographic area
		Three months ended August 31,
		2013			2012
	Revenues
	United States	$	83,157		$	76,275
	Other Americas	13,420			11,788
	Europe	35,406			16,677
	Asia-Pacific	3,855			8,647
		$	135,838		$	113,387

Description_of_Business_and_Ba2

Description of Business and Basis of Presentation (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Aug. 31, 2013
	item
Principles of Consolidation
Difference of period between the consolidation of International segment subsidiaries	1 month
Number of months less than the actual number of months from the acquisition date for which results of international segment subsidiaries are included in consolidation	1
Reclassification
Interest accretion expense related to contingent consideration liabilities reclassified from interest expense to acquisition-related expense	$0.30

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)	3 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Share-based compensation
Stock options granted (in shares)	0	0
Stock option awards
Share-based compensation
Recognized share-based compensation expense	700,000	800,000
Unrecognized compensation cost, net of estimated forfeitures, related to stock option awards	100,000
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 2 months 12 days
Additional disclosures
Cash proceeds from options exercised	303,000	99,000
Aggregate intrinsic value of options exercised	326,000	126,000

ShareBased_Compensation_Detail1

Share-Based Compensation (Details 2) (USD $)	3 Months Ended
	Aug. 31, 2013	Aug. 31, 2012
Share-based compensation
Payments for employees' tax obligations	$998,000	$807,000
Non-employee directors
Share-based compensation
Number of fully vested common stock granted	10,000	13,000
Number of non-employee directors to whom fully vested common stock is granted	5	5
Fair value of shares vested	200,000	300,000
Restricted stock unit awards
Share-based compensation
Recognized share-based compensation expense	800,000	600,000
Unrecognized compensation cost, net of estimated forfeitures, related to restricted stock unit awards	11,100,000
Weighted-average period over which unrecognized compensation cost is expected to be recognized	2 years 10 months 24 days
Shares vested	175,000	123,000
Fair value of shares vested	$3,200,000	$1,900,000
Shares withheld by company for employees' tax obligations	54,000	37,000

Earnings_per_Share_Details

Earnings per Share (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Numerator:
Net income attributable to Mistras Group, Inc.	$5,641	$4,281
Denominator:
Weighted average common shares outstanding	28,241	28,045
Basic earnings per share (in dollars per share)	$0.20	$0.15
Numerator:
Net income attributable to Mistras Group, Inc.	$5,641	$4,281
Denominator:
Weighted average common shares outstanding	28,241	28,045
Dilutive effect of stock options outstanding (in shares)	723	806
Dilutive effect of restricted stock units outstanding (in shares)	145	149
Weighted average common shares outstanding, diluted	29,109	29,000
Diluted earnings per share (in dollars per share)	$0.19	$0.15

Acquisitions_Details

Acquisitions (Details) (USD $)	3 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	31-May-13
Other acquisition information
Acquisition-related costs	($2,097,000)	$107,000
Net decrease in acquisition-related contingent consideration liabilities	-2,165,000	-121,000
Fair value of contingent consideration liabilities	2,840,000		5,144,000
Fiscal 2014 acquisitions
Other acquisition information
Acquisition-related costs	100,000
Net decrease in acquisition-related contingent consideration liabilities	2,200,000
Fair value of contingent consideration liabilities	13,000,000
Net increase in income from operations	2,200,000
Fiscal 2013 acquisitions
Other acquisition information
Acquisition-related costs		600,000
Net decrease in acquisition-related contingent consideration liabilities		800,000
Fair value of contingent consideration liabilities		11,600,000
Net increase in income from operations	800,000
Additional information
Interest accretion expense related to contingent consideration liabilities		300,000
Pro forma information of the results of operations
Revenues	135,838,000	133,667,000
Income from operations	$9,575,000	$9,565,000

Accounts_Receivable_net_Detail

Accounts Receivable, net (Details) (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Accounts Receivable, net
Trade accounts receivable	$108,224	$110,438
Allowance for doubtful accounts	-1,966	-1,884
Total	$106,258	$108,554

Inventories_net_Details

Inventories, net (Details) (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Inventories, net
Raw materials	$3,440	$3,332
Work in process	2,000	2,310
Finished goods	4,580	4,355
Services-related consumable supplies	2,961	2,507
Total	$12,981	$12,504

Property_Plant_and_Equipment_n2

Property, Plant and Equipment, net (Details) (USD $)	3 Months Ended
	Aug. 31, 2013	Aug. 31, 2012	31-May-13
Property, Plant and Equipment, net
Property, plant and equipment, gross	$153,461,000		$150,022,000
Accumulated depreciation and amortization	-85,385,000		-81,603,000
Property, plant and equipment, net	68,076,000		68,419,000
Depreciation expense	4,600,000	4,400,000
Land
Property, Plant and Equipment, net
Property, plant and equipment, gross	1,939,000		1,943,000
Building and improvements
Property, Plant and Equipment, net
Property, plant and equipment, gross	21,109,000		20,973,000
Building and improvements | Minimum
Property, Plant and Equipment, net
Useful Life	30 years
Building and improvements | Maximum
Property, Plant and Equipment, net
Useful Life	40 years
Office furniture and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	5,748,000		5,543,000
Office furniture and equipment | Minimum
Property, Plant and Equipment, net
Useful Life	5 years
Office furniture and equipment | Maximum
Property, Plant and Equipment, net
Useful Life	8 years
Machinery and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	$124,665,000		$121,563,000
Machinery and equipment | Minimum
Property, Plant and Equipment, net
Useful Life	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment, net
Useful Life	7 years

Accrued_Expenses_and_Other_Cur2

Accrued Expenses and Other Current Liabilities (Details) (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Accrued Expenses and Other Current Liabilities
Accrued salaries, wages and related employee benefits	$21,073	$23,662
Contingent consideration	2,840	5,144
Accrued workers' compensation and health benefits	3,797	3,667
Deferred revenues	2,288	2,623
Other accrued expenses	14,877	12,743
Total	$44,875	$47,839

LongTerm_Debt_Details

Long-Term Debt (Details) (USD $)	3 Months Ended
	Aug. 31, 2013	31-May-13
	item
Long-Term Debt
Long-term debt	$52,900,000	$60,267,000
Less: Current portion	-7,405,000	-7,418,000
Long-term debt, net of current portion	45,495,000	52,849,000
Senior credit facility
Long-Term Debt
Long-term debt	32,999,000	39,567,000
Current borrowing capacity	125,000,000
Maximum borrowing capacity	150,000,000
Maximum borrowing capacity in non-U.S. dollar currencies	30,000,000
Maximum amount available for the issuance of letters of credit	10,000,000
Outstanding borrowings	33,000,000
Outstanding letters of credit	4,500,000
Number of consecutive fiscal quarters used for calculating Funded Debt Leverage Ratio	4
Additional interest rate margin if Funded Debt Leverage Ratio exceeds threshold (as a percent)	2.00%
Preceding period used for calculating Interest Coverage Ratio	12 months
Senior credit facility | Minimum
Long-Term Debt
Funded Debt Leverage Ratio at which the entity will bear the maximum interest rate margin	2.5
Funded Debt Leverage Ratio for additional interest payment	3
Interest Coverage Ratio	3
Senior credit facility | Maximum
Long-Term Debt
Funded Debt Leverage Ratio at which the entity will have the benefit of lowest interest margin	0.5
Funded Debt Leverage Ratio	3
Senior credit facility | LIBOR
Long-Term Debt
Reference rate, description	LIBOR
Senior credit facility | LIBOR | Minimum
Long-Term Debt
Margin (as a percent)	1.00%
Senior credit facility | LIBOR | Maximum
Long-Term Debt
Margin (as a percent)	2.00%
Senior credit facility | Base rate
Long-Term Debt
Reference rate, description	base rate
Senior credit facility | Base rate | Minimum
Long-Term Debt
Margin (as a percent)	0.25%
Senior credit facility | Base rate | Maximum
Long-Term Debt
Margin (as a percent)	1.25%
Notes payable
Long-Term Debt
Long-term debt	14,603,000	15,740,000
Interest rate, minimum (as a percent)	0.00%
Interest rate, maximum (as a percent)	4.00%
Notes payable | Minimum
Long-Term Debt
Maturity term from the date of acquisition	3 years
Market interest rate (as a percent)	2.00%
Notes payable | Maximum
Long-Term Debt
Maturity term from the date of acquisition	5 years
Market interest rate (as a percent)	4.00%
Other
Long-Term Debt
Long-term debt	$5,298,000	$4,960,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Aug. 31, 2013	31-May-13
In Thousands, unless otherwise specified
Liabilities:
Contingent consideration	$2,840	$5,144
Recurring basis | Level 3
Liabilities:
Contingent consideration	13,038	15,438
Total Liabilities	13,038	15,438
Recurring basis | Total
Liabilities:
Contingent consideration	13,038	15,438
Total Liabilities	$13,038	$15,438

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	12 Months Ended	3 Months Ended
In Millions, unless otherwise specified	31-May-13	Aug. 31, 2013
	Lawsuits for alleged quality defects	Acquisition-related contingencies
	item
Litigation
Number of lawsuits yet to be filed	0
Potential acquisition-related contingent consideration, low end of range		$0
Potential acquisition-related contingent consideration, high end of range		$23.90
Period over which potential acquisition-related contingent consideration would be payable		5 years

Segment_Disclosure_Details

Segment Disclosure (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012	31-May-13
	item
Segment Disclosure
Number of operating segments	3
Financial information by segment
Revenues	$135,838	$113,387
Gross profit	39,277	33,717
Income from operations	9,575	7,706
Depreciation and amortization	6,765	6,039
Intangible assets, net	50,560		52,428
Goodwill	115,325		115,270
Total assets	372,668		376,660
Operating segments | Services
Financial information by segment
Revenues	95,810	82,397
Gross profit	26,747	20,940
Income from operations	10,846	6,766
Depreciation and amortization	4,235	4,524
Intangible assets, net	13,450		14,527
Goodwill	61,127		61,285
Total assets	195,196		200,326
Operating segments | International
Financial information by segment
Revenues	37,759	24,429
Gross profit	10,120	7,081
Income from operations	1,815	1,591
Depreciation and amortization	1,922	1,047
Intangible assets, net	27,122		27,520
Goodwill	41,001		40,788
Total assets	139,961		138,108
Operating segments | Products and Systems
Financial information by segment
Revenues	6,585	9,534
Gross profit	2,384	5,245
Income from operations	591	3,080
Depreciation and amortization	583	491
Intangible assets, net	9,270		9,600
Goodwill	13,197		13,197
Total assets	36,715		37,948
Corporate and eliminations
Financial information by segment
Revenues	-4,316	-2,973
Gross profit	26	451
Income from operations	-3,677	-3,731
Depreciation and amortization	25	-23
Intangible assets, net	718		781
Total assets	796		278
Corporate and eliminations | Services
Financial information by segment
Revenues	2,200	1,100
Corporate and eliminations | International
Financial information by segment
Revenues	100	100
Corporate and eliminations | Products and Systems
Financial information by segment
Revenues	$1,900	$1,700

Segment_Disclosure_Details_2

Segment Disclosure (Details 2) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Revenue by geographic area
Revenues	$135,838	$113,387
United States
Revenue by geographic area
Revenues	83,157	76,275
Other Americas
Revenue by geographic area
Revenues	13,420	11,788
Europe
Revenue by geographic area
Revenues	35,406	16,677
Asia-Pacific
Revenue by geographic area
Revenues	$3,855	$8,647