Apogee Enterprises (APOG) 10-Q 10 Jul 14 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	31-May-14	Jun. 27, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'APOGEE ENTERPRISES, INC.	'
Entity Central Index Key	'0000006845	'
Document Type	'10-Q	'
Document Period End Date	31-May-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2015	'
Document Fiscal Period Focus	'Q1	'
Current Fiscal Year End Date	'--02-28	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	29,131,779

Consolidated_Balance_Sheets_un

Consolidated Balance Sheets (unaudited) (USD $)	31-May-14	Mar. 01, 2014
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$17,093	$28,465
Short-term available for sale securities	564	204
Receivables, net of allowance for doubtful accounts	154,719	154,914
Inventories	50,422	47,982
Refundable income taxes	0	973
Deferred tax assets	3,246	3,529
Other current assets	7,616	6,725
Total current assets	233,660	242,792
Property, plant and equipment, net	197,144	193,946
Available-for-sale Securities, Debt Securities, Noncurrent	10,234	11,273
Restricted investments	1,742	2,540
Goodwill	78,562	78,021
Intangible assets	27,221	27,198
Other assets	9,877	9,587
Total assets	558,440	565,357
Current liabilities	'	'
Accounts payable	47,033	47,241
Accrued payroll and related benefits	20,305	25,216
Accrued self-insurance reserves	6,777	6,683
Other current liabilities	31,217	35,088
Billings in excess of costs and earnings on uncompleted contracts	23,542	22,557
Current portion long-term debt	52	49
Accrued income taxes	134	0
Total current liabilities	129,060	136,834
Long-term debt	20,659	20,659
Unrecognized tax benefits	5,367	5,234
Long-term self-insurance reserves	7,383	7,977
Deferred tax liabilities	6,738	7,403
Other non-current liabilities	32,581	34,620
Commitments and contingent liabilities (Note 13)	'	'
Shareholders' equity	'	'
Common stock of $0.33-1/3 par value; authorized 50,000,000 shares; issued and outstanding 29,102,733 and 28,958,119, respectively	9,701	9,653
Additional paid-in capital	133,359	130,570
Retained earnings	224,382	225,367
Common stock held in trust	-788	-791
Deferred compensation obligations	788	791
Accumulated other comprehensive loss	-10,790	-12,960
Total shareholders’ equity	356,652	352,630
Total liabilities and shareholders' equity	$558,440	$565,357

Consolidated_Balance_Sheets_un1

Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	31-May-14	Mar. 01, 2014
Statement of Financial Position [Abstract]	'	'
Common stock, par value	$0.33	$0.33
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	29,102,733	28,958,119
Common stock, shares outstanding	29,102,733	28,958,119

Consolidated_Results_of_Operat

Consolidated Results of Operations (unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	31-May-14	Jun. 01, 2013
Income Statement [Abstract]	'	'
Net sales	$210,883	$179,311
Cost of sales	169,445	142,925
Gross profit	41,438	36,386
Selling, general and administrative expenses	33,621	30,271
Operating income	7,817	6,115
Interest income	249	174
Interest expense	193	499
Other income (expense), net	1,283	69
Earnings before income taxes	9,156	5,859
Income tax expense (benefit)	3,054	1,700
Net earnings	$6,102	$4,159
Earnings per share - basic	'	'
Net earnings	$0.21	$0.15
Earnings per share - diluted	'	'
Net earnings	$0.21	$0.14
Weighted average basic shares outstanding	28,777	28,441
Weighted average diluted shares outstanding	29,385	29,337

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Earnings (unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net earnings	$6,102	$4,159
Other comprehensive earnings:	'	'
Unrealized gain (loss) on marketable securities, net of $45 and $(29) tax expense (benefit), respectively	82	-53
Unrealized loss on foreign currency hedge, net of $36 and $24 tax benefit, respectively	-62	-41
Foreign currency translation adjustments	2,150	252
Other comprehensive earnings (loss)	2,170	158
Total comprehensive earnings	$8,272	$4,317

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Earnings (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Statement of Comprehensive Income [Abstract]	'	'
Tax expense (benefit) on marketable securities	$45	($29)
Tax expense (benefit) on foreign currency hedge	($36)	($24)

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Operating Activities	'	'
Net earnings	$6,102	$4,159
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	6,766	6,511
Stock-based compensation	1,250	1,118
Deferred income taxes	-501	276
Excess tax benefits from stock-based compensation	-1,589	-1,009
Gain on disposal of assets	-453	-304
Other, net	12	231
Changes in operating assets and liabilities:	'	'
Receivables	586	3,782
Inventories	-2,268	-4,413
Accounts payable and accrued expenses	-11,677	-11,911
Billings in excess of costs and earnings on uncompleted contracts	985	-2,051
Refundable and accrued income taxes	2,825	1,425
Other, net	-842	19
Net cash provided by (used in) operating activities	1,196	-2,167
Investing Activities	'	'
Capital expenditures	-8,738	-1,512
Proceeds from sales of property, plant and equipment	201	169
Purchases of restricted investments	0	-2,800
Sales/maturities of restricted investments	798	22,053
Purchases of marketable securities	-484	-10,225
Sales/maturities of marketable securities	868	6,656
Net cash provided by (used in) investing activities	-7,355	14,341
Financing Activities	'	'
Payments on debt	-12	-10,015
Shares withheld for taxes, net of stock issued to employees	-3,164	-1,141
Excess tax benefits from stock-based compensation	1,589	1,009
Repurchase and retirement of common stock	-863	0
Dividends paid	-3,078	-2,687
Net cash provided by (used in) financing activities	-5,528	-12,834
Increase (decrease) in cash and cash equivalents	-11,687	-660
Effect of exchange rates on cash	315	40
Cash and cash equivalents at beginning of year	28,465	37,767
Cash and cash equivalents at end of period	17,093	37,147
Noncash Activity	'	'
Capital expenditures in accounts payable	$921	$298

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	31-May-14
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The consolidated financial statements of Apogee Enterprises, Inc. (we, us, our or the Company) included herein have been prepared in accordance with accounting principles generally accepted in the United States. The consolidated financial statements and notes are presented as permitted by the regulations of the Securities and Exchange Commission (Form 10-Q) and do not contain certain information included in the Company’s annual financial statements and notes. The information included in this Form 10-Q should be read in conjunction with the Management’s Discussion and Analysis of Financial Condition and Results of Operations and financial statements and notes thereto included in the Company’s Form 10-K for the year ended March 1, 2014. The results of operations for the three-month period ended May 31, 2014 are not necessarily indicative of the results to be expected for the full year.
	In the opinion of the Company, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of only normal recurring adjustments) necessary to present fairly the financial position as of May 31, 2014 and March 1, 2014, and the results of operations, comprehensive earnings and cash flows for the three-month periods ended May 31, 2014 and June 1, 2013.
	The Company’s fiscal year ends on the Saturday closest to the last day of February. Each interim quarter ends on the Saturday closest to the end of the months of May, August and November.
	The results of the Company's Brazilian subsidiary within the Architectural Glass segment are reported on a two-month lag. There were no significant intervening events that would have materially affected our consolidated financial statements had they been recorded during the three months ended May 31, 2014.
	In connection with preparing the unaudited consolidated financial statements for the three months ended May 31, 2014, the Company has evaluated subsequent events for potential recognition and disclosure through the date of this filing and determined that there were no subsequent events that required recognition or disclosure in the consolidated financial statements.

New_Accounting_Standards

New Accounting Standards	3 Months Ended
	31-May-14
Accounting Changes and Error Corrections [Abstract]	'
New Accounting Standards	'
	New Accounting Standards
	In May 2014, the FASB issued a standard on revenue from contracts with customers. The standard outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance is effective for annual reporting periods beginning after December 15, 2016, Apogee's fiscal 2018. The Company is currently evaluating the impact that this new standard will have on its consolidated financial statements.
	No other new accounting pronouncements issued or effective during the first three months of fiscal 2015 have had or are expected to have a material impact on the consolidated financial statements.

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	31-May-14
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Share-Based Compensation
	Total stock-based compensation expense included in the results of operations was $1.3 million and $1.1 million for the three-month periods ended May 31, 2014 and June 1, 2013, respectively.
	Stock Options and SARs
	There were no options or SARs issued in the first three months of fiscal 2015 or 2014. The following table summarizes the award transactions for the three months ended May 31, 2014:
		Options/SARs Outstanding
		Number of		Weighted		Weighted	Aggregate
		Shares		Average		Average	Intrinsic
				Exercise Price		Remaining	Value
						Contractual
						Life
	Outstanding at March 1, 2014	847,852		$	13.88
	Awards exercised	(20,791	)	14.44
	Awards canceled	(500	)	11.86
	Outstanding at May 31, 2014	826,561		$	13.87	5.3 Years	$	13,416,677
	Vested or expected to vest at May 31, 2014	826,561		$	13.87	5.3 Years	$	13,416,677
	Exercisable at May 31, 2014	676,390		$	15.1	4.9 Years	$	10,148,956
	At May 31, 2014, there was $0.1 million of total unrecognized compensation cost related to stock option awards, which is expected to be recognized over a weighted average period of approximately three months. Cash proceeds from the exercise of stock options were $0.2 million and $1.4 million for the three months ended May 31, 2014 and June 1, 2013, respectively. The amount by which the stock price on the date of exercise exceeded the stock price of the award on the date of grant for options exercised was $0.4 million during the three months ended May 31, 2014 and $1.6 million during the prior-year period.
	Nonvested Shares and Share Units
	The following table summarizes the nonvested share award transactions, including nonvested share units, for the three months ended May 31, 2014:
		Nonvested Shares and Units
		Number of		Weighted
		Shares and		Average
		Units		Grant Date
				Fair Value
	Nonvested at March 1, 2014	575,064		$	16.89
	Granted(1)	144,486		26.7
	Vested	(269,929	)	15.53
	Canceled	—		—
	Nonvested at May 31, 2014	449,621		$	20.86
	-1	Includes 40,735 of shares granted and immediately vested for achievement above target for the fiscal 2012-2014 performance period. Nonvested share units of 117,765 (at target) were previously granted in fiscal 2012 for this performance period.
	At May 31, 2014, there was $7.2 million of total unrecognized compensation cost related to nonvested share and nonvested share unit awards, which is expected to be recognized over a weighted average period of approximately 25 months. The total fair value of shares vested during the three-month period of fiscal 2015 was $8.5 million.

Earnings_per_Share

Earnings per Share	3 Months Ended
	31-May-14
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings per Share
	The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per share:
		Three Months Ended
	(In thousands, except per share data)	May 31,		June 1,
		2014		2013
	Basic earnings per share – weighted common shares outstanding	28,777		28,441
	Weighted average effect of nonvested share grants and assumed exercise of stock options	608		896
	Diluted earnings per share – weighted common shares and potential common shares outstanding	29,385		29,337
	Earnings per share – basic	$	0.21	$	0.15
	Earnings per share – diluted	0.21		0.14
	Stock options excluded from the calculation of earnings per share because the exercise price was greater than the average market price of the common shares	—		56

Inventories

Inventories	3 Months Ended
	31-May-14
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
	(In thousands)	May 31,		March 1,
		2014		2014
	Raw materials	$	18,828	$	17,975
	Work-in-process	10,903		9,700
	Finished goods	15,770		15,206
	Costs and earnings in excess of billings on uncompleted contracts	4,921		5,101
	Total inventories	$	50,422	$	47,982

Marketable_Securities

Marketable Securities	3 Months Ended
	31-May-14
Marketable Securities [Abstract]	'
Marketable Securities	'
	Marketable Securities
	At May 31, 2014, the Company had investments in municipal bonds of $10.8 million; $0.6 million was current and $10.2 million was non-current. The Company’s wholly owned insurance subsidiary, Prism Assurance, Ltd. (Prism), holds all of the municipal bonds. Prism insures a portion of the Company’s workers’ compensation, general liability and automobile liability risks using reinsurance agreements to meet statutory requirements. The reinsurance carrier requires Prism to maintain fixed-maturity investments, which are generally high-quality municipal bonds, for the purpose of providing collateral for Prism’s obligations under the reinsurance agreement. All of the Company’s fixed maturity investments are classified as “available for sale,” are carried at fair value and are reported as short-term available-for-sale securities or available-for-sale securities in the consolidated balance sheet.
	The amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale at May 31, 2014 and March 1, 2014, were as follows:
	(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated
									Fair
									Value
	May 31, 2014
	Municipal bonds	$	10,913	$	119	$	(234	)	$	10,798
	Total investments	$	10,913	$	119	$	(234	)	$	10,798
	March 1, 2014
	Municipal bonds	$	11,719	$	94	$	(336	)	$	11,477
	Total investments	$	11,719	$	94	$	(336	)	$	11,477
	Available for sale securities with a fair value of $3.7 million have been in a continuous unrealized loss position for more than 12 months with unrealized losses of $0.2 million.
	The Company tests for other than temporary losses on a quarterly basis and considers the unrealized losses indicated above to be temporary in nature. The Company intends to hold the investments until it can recover the full principal amount, and has the ability to do so based on other sources of liquidity. The Company expects such recoveries to occur prior to the contractual maturities.
	The amortized cost and estimated fair values of investments at May 31, 2014, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
	(In thousands)	Amortized Cost		Estimated Market Value
	Due within one year	$	560	$	564
	Due after one year through five years	2,398		2,435
	Due after five years through 10 years	6,690		6,703
	Due after 10 years through 15 years	1,250		1,081
	Due beyond 15 years	15		15
	Total	$	10,913	$	10,798
	Gross realized gains and losses were not material during either of the first three-month periods of fiscal 2015 or 2014.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	31-May-14
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	The Company accounts for financial assets and liabilities in accordance with accounting standards that define fair value and establish a framework for measuring fair value. The hierarchy prioritizes the inputs into three broad levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the Company’s assumptions used to measure assets and liabilities at fair value. A financial asset’s or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.
	Financial assets and liabilities measured at fair value as of May 31, 2014 and March 1, 2014, are summarized below:
	(In thousands)	Quoted Prices in		Other		Unobservable		Total Fair
		Active Markets		Observable		Inputs		Value
		(Level 1)		Inputs		(Level 3)
				(Level 2)
	May 31, 2014
	Cash equivalents
	Money market funds	$	8,242	$	—	$	—	$	8,242
	Total cash equivalents	8,242		—		—		8,242
	Available for sale securities
	Municipal bonds	$	—	$	10,798	$	—	$	10,798
	Total available for sale securities	—		10,798		—		10,798
	Restricted investments
	Money market funds	$	1,742	$	—	$	—	$	1,742
	Total restricted investments	1,742		—		—		1,742
	Mutual fund investments
	Mutual funds	$	807	$	—	$	—	$	807
	Total mutual fund investments	807		—		—		807
	Total assets at fair value	$	10,791	$	10,798	$	—	$	21,589
	March 1, 2014
	Cash equivalents
	Money market funds	$	12,788	$	—	$	—	$	12,788
	Total cash equivalents	12,788		—		—		12,788
	Available for sale securities
	Municipal bonds	$	—	$	11,477	$	—	$	11,477
	Total available for sale securities	—		11,477		—		11,477
	Restricted investments
	Money market funds	$	2,540	$	—	$	—	$	2,540
	Total restricted investments	2,540		—		—		2,540
	Mutual fund investments
	Mutual funds	$	409	$	—	$	—	$	409
	Total mutual fund investments	409		—		—		409
	Foreign currency instruments
	Foreign currency instruments	$	—	$	98	$	—	$	98
	Total foreign currency instruments	$	—	$	98	$	—	$	98
	Total assets at fair value	$	15,737	$	11,575	$	—	$	27,312
	Cash equivalents
	Cash equivalents include highly liquid investments with an original maturity of three months or less, and consist primarily of money market funds. The cash equivalents are held at fair value based on quoted market prices, which approximate stated cost.
	Available for sale securities
	The Company had short-term available-for-sale securities of $0.6 million and long-term available-for-sale securities of $10.2 million as of May 31, 2014, consisting of municipal bonds. All of the Company’s fixed maturity investments are classified as “available for sale,” and are carried at fair market value based on market prices from recent trades of similar securities.
	Restricted investments
	The Company had $1.7 million of long-term restricted investments, as of May 31, 2014, consisting of money market funds, which are short term in nature but are restricted for future investment in the Company's storefront and entrance business in Michigan, and are, therefore, classified as long term. The restricted investments are held at fair value based on quoted market prices, which approximate stated cost.
	Mutual fund investments
	The Company had $0.8 million of mutual fund investments as of May 31, 2014 as a long-term funding source for the deferred compensation plan. The mutual fund investments are recorded at estimated fair value, based on quoted market prices, and are included in other non-current assets in the consolidated balance sheet.
	Foreign Currency Instruments
	The Company had a foreign exchange forward contract in place to hedge against the effect of exchange rate fluctuations on certain forecasted purchases. The forward contract was measured at fair value using readily observable market inputs, such as quotations on forward foreign exchange points and foreign interest rates.

Acquisitions

Acquisitions	3 Months Ended
	31-May-14
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	Acquisitions
	On November 5, 2013, the Company acquired all of the shares of Alumicor Limited (Alumicor), a privately held business, for $52.9 million, including cash acquired of $1.6 million. Alumicor is a window, storefront, entrance and curtainwall company primarily serving the Canadian commercial construction market. Alumicor's results of operations have been included in the consolidated financial statements and within the Architectural Framing Systems segment since the date of acquisition.
	The following unaudited pro forma consolidated condensed financial results of operations for the three-months ended June 1, 2013 are presented as if the acquisition had been completed at the beginning of fiscal year 2014:
		Three Months Ended
	(In thousands, except per share data)	June 1, 2013
	Net sales	$	192,363
	Net income	4,523
	Earnings per share
	Basic	$	0.16
	Diluted	0.15
	These unaudited pro forma consolidated condensed financial results have been prepared for comparative purposes only and include certain adjustments, such as elimination of interest expense on pre-acquisition debt of the acquiree. The adjustments do not reflect the effect of synergies and integration costs that would result from integration of this acquisition.

Goodwill_and_Other_Identifiabl

Goodwill and Other Identifiable Intangible Assets	3 Months Ended
	31-May-14
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Other Identifiable Intangible Assets	'
	Goodwill and Other Identifiable Intangible Assets
	The carrying amount of goodwill attributable to each business segment as of the three months ended May 31, 2014 is detailed below.
	(In thousands)	Architectural Glass			Architectural Services			Architectural Framing Systems			Large-Scale		Total
											Optical
	Balance at March 2, 2013	$	27,002		$	1,120		$	22,663		$	10,557	$	61,342
	Goodwill acquired	—			—			18,254			—		18,254
	Foreign currency translation	(374		)	—			(1,201		)	—		(1,575		)
	Balance at March 1, 2014	26,628			1,120			39,716			10,557		78,021
	Foreign currency translation	115			—			426			—		541
	Balance at May 31, 2014	$	26,743		$	1,120		$	40,142		$	10,557	$	78,562
	The following table provides the gross carrying amount of other intangible assets and related accumulated amortization:
		31-May-14
	(In thousands)	Gross			Accumulated			Foreign			Net
		Carrying			Amortization			Currency
		Amount						Translation
	Definite-lived intangible assets:
	Debt issue costs	$	3,453		$	(2,417	)	$	—		$	1,036
	Non-compete agreements	6,690			(6,261		)	7			436
	Customer relationships	25,677			(10,910		)	354			15,121
	Trademarks and other intangibles	8,275			(2,609		)	75			5,741
	Total definite-lived intangible assets	$	44,095		$	(22,197	)	$	436		$	22,334
	Indefinite-lived intangible assets:
	Trademarks	4,768			—			119			4,887
	Total intangible assets	$	48,863		$	(22,197	)	$	555		$	27,221
		March 1, 2014
	(In thousands)	Gross			Accumulated			Foreign			Net
		Carrying			Amortization			Currency
		Amount						Translation
	Definite-lived intangible assets:
	Debt issue costs	$	3,453		$	(2,370	)	$	—		$	1,083
	Non-compete agreements	6,767			(6,266		)	(35		)	466
	Customer relationships	26,862			(10,673		)	(1,077		)	15,112
	Trademarks and other intangibles	8,566			(2,546		)	(251		)	5,769
	Total definite-lived intangible assets	$	45,648		$	(21,855	)	$	(1,363	)	$	22,430
	Indefinite-lived intangible assets:
	Trademarks	5,104			—			(336		)	4,768
	Total intangible assets	$	50,752		$	(21,855	)	$	(1,699	)	$	27,198
	Amortization expense on the definite-lived intangible assets was $0.5 million and $0.4 million for three-month periods ended May 31, 2014 and June 1, 2013, respectively. The amortization expense associated with the debt issue costs is included in interest expense while the remainder is in selling, general and administrative expenses in the consolidated results of operations. At May 31, 2014, the estimated future amortization expense for definite-lived intangible assets for the remainder of fiscal 2015 and all of the following four fiscal years is as follows:
	(In thousands)	Remainder			Fiscal			Fiscal			Fiscal		Fiscal
		of Fiscal			2016			2017			2018		2019
		2015
	Estimated amortization expense	$	1,774		$	1,951		$	1,808		$	1,763	$	1,676

Debt

Debt	3 Months Ended
	31-May-14
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	The Company maintains a $100.0 million revolving credit facility that expires in November 2018. No borrowings were outstanding under the facility as of May 31, 2014 or March 1, 2014.
	The credit facility requires the Company to maintain a minimum level of net worth, as defined in the credit facility, based on certain quarterly financial calculations. The minimum required net worth computed in accordance with the credit agreement at May 31, 2014 was $292.7 million, whereas the Company’s net worth as defined in the credit facility was $356.7 million. The credit facility also requires that the Company maintain an adjusted debt-to-EBITDA ratio of not more than 3.00. This ratio is computed quarterly, with EBITDA computed on a rolling four-quarter basis. For purposes of calculating the adjusted debt in the adjusted debt-to-EBITDA ratio, the Company reduces non-credit facility debt for up to $25 million to the extent of unrestricted cash balances, cash equivalents and short-term marketable securities available for sale in excess of $15 million. The Company’s ratio was 0.28 at May 31, 2014. If the Company is not in compliance with either of these covenants, the lenders may terminate the commitment and/or declare any loan then outstanding to be immediately due and payable. At May 31, 2014, the Company was in compliance with the financial covenants of the credit facility.
	Debt at May 31, 2014 consists of $20.4 million of industrial revenue bonds, and $0.3 million of other debt. The industrial revenue bonds mature in fiscal years 2021 through 2043, and the other debt matures in fiscal years 2015 through 2021. The fair value of the industrial revenue bonds approximates carrying value at May 31, 2014, due to the variable interest rates on these instruments. The bonds are classified as Level 2 within the fair value hierarchy.
	Interest payments were $0.1 million and $0.2 million for the three months ended May 31, 2014 and June 1, 2013, respectively, and primarily relate to fees associated with our revolving credit facility.

Employee_Benefit_Plans

Employee Benefit Plans	3 Months Ended
	31-May-14
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	Employee Benefit Plans
	Pension Plans
	The Company sponsors an unfunded Officers’ Supplemental Executive Retirement Plan for the benefit of certain executives and a defined-benefit pension plan, the Tubelite, Inc. Hourly Employees’ Pension Plan. Components of net periodic benefit cost for the plans for the three-month periods ended May 31, 2014 and June 1, 2013, were as follows:
		Three Months Ended
	(In thousands)	May 31,			June 1,
		2014			2013
	Interest cost	$	138		$	134
	Expected return on assets	(43		)	(46		)
	Amortization of unrecognized net loss	44			59
	Net periodic benefit cost	$	139		$	147

Income_Taxes

Income Taxes	3 Months Ended
	31-May-14
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The Company files income tax returns in the U.S. federal jurisdiction, various U.S. state jurisdictions, Canada, Brazil and other international jurisdictions. The Company is no longer subject to U.S. federal tax examinations for years prior to fiscal 2011, or state and local income tax examinations for years prior to fiscal 2005. The Company is not currently under U.S. federal examination for years subsequent to fiscal year 2010, and there is very limited audit activity of the Company’s income tax returns in U.S. state jurisdictions or international jurisdictions.
	The total liability for unrecognized tax benefits at May 31, 2014 and March 1, 2014 was approximately $5.4 million and $5.2 million, respectively. The Company records the impact of penalties and interest related to unrecognized tax benefits in income tax expense, which is consistent with past practices. The total liability for unrecognized tax benefits is expected to decrease by approximately $0.4 million during the next 12 months due to audit settlements and lapsing of statutes.
	In September 2013, the U.S. Department of the Treasury and the IRS issued final regulations addressing the acquisition, production and improvement of tangible property, and also proposed regulations addressing the disposition of property. These regulations replace previously issued temporary regulations and are effective for tax years beginning on or after January 1, 2014. The adoption of the new regulations did not have a material impact on the Company’s consolidated financial statements.

Commitments_and_Contingent_Lia

Commitments and Contingent Liabilities	3 Months Ended
	31-May-14
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingent Liabilities	'
	Commitments and Contingent Liabilities
	Operating lease commitments. As of May 31, 2014, the Company was obligated under non-cancelable operating leases for buildings and equipment. Certain leases provide for increased rentals based upon increases in real estate taxes or operating costs. Future minimum rental payments under non-cancelable operating leases are:
	(In thousands)	Remainder			Fiscal			Fiscal		Fiscal		Fiscal		Thereafter		Total
		of Fiscal			2016			2017		2018		2019
		2015
	Total minimum payments	$	7,166		$	8,822		$	7,041	$	5,492	$	6,983	$	2,933	$	38,437
	Bond commitments. In the ordinary course of business, predominantly in the Company’s Architectural Services business, the Company is required to provide surety or performance bonds that commit payments to its customers for any non-performance by the Company. At May 31, 2014, $81.6 million of the Company’s backlog was bonded by performance bonds with a face value of $278.1 million. Performance bonds do not have stated expiration dates, as the Company is released from the bonds upon completion of the contract. The Company has never been required to make any payments related to these performance bonds with respect to any of the current portfolio of businesses.
	Warranties. The Company accrues for warranty and claim costs as a percentage of sales based on historical trends and for specific sales credits as they become known and estimable. Actual warranty and claim costs are deducted from the accrual when paid. Factors that could have an impact on the warranty accrual in any given period include the following: changes in manufacturing quality, shifts in product mix and any significant changes in sales volume. The Company’s warranty and claim accruals are detailed below.
		Three Months Ended
	(In thousands)	May 31,			June 1,
		2014			2013
	Balance at beginning of period	$	11,978		$	8,323
	Additional accruals	1,060			1,323
	Claims paid	(891		)	(857		)
	Balance at end of period	$	12,147		$	8,789
	Letters of credit. At May 31, 2014, the Company had ongoing letters of credit related to its construction contracts and certain industrial revenue bonds. The total value of letters of credit under which the Company was obligated as of May 31, 2014 was approximately $23.5 million, all of which have been issued under the credit facility. The Company’s total availability under its $100.0 million credit facility is reduced by borrowings under the facility and also by letters of credit issued under the facility.
	Purchase obligations. The Company has purchase obligations for raw material commitments and capital expenditures. As of May 31, 2014, these obligations totaled $85.2 million.
	Litigation. The Company is a party to various legal proceedings incidental to its normal operating activities. In particular, like others in the construction supply and services industry, the Company’s construction supply and services businesses are routinely involved in various disputes and claims arising out of construction projects, sometimes involving significant monetary damages or product replacement. The Company is subject to litigation arising out of employment practices, workers compensation, general liability and automobile claims. Although it is very difficult to accurately predict the outcome of such proceedings, facts currently available indicate that no such claims will result in losses that would have a material adverse effect on the results of operations, cash flows or financial condition of the Company.

Segment_Information

Segment Information	3 Months Ended
	31-May-14
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	The Company has four reporting segments: Architectural Glass, Architectural Services, Architectural Framing Systems and Large-Scale Optical (LSO). The Architectural Glass segment fabricates glass used in customized window and wall systems comprising the outside skin of commercial and institutional buildings. The Architectural Services segment designs, engineers, fabricates and installs the walls of glass, and windows and other curtainwall products making up the outside skin of commercial and institutional buildings for new construction and renovation. The Architectural Framing Systems segment designs, engineers, fabricates and finishes the aluminum frames used in customized aluminum and glass window, curtainwall, storefront and entrance systems comprising the outside skin and entrances of commercial and institutional buildings. The Company has aggregated four operating segments into the Architectural Framing Systems reporting segment based upon their similar products, customers, distribution methods, production processes and economic characteristics. The LSO segment manufactures value-added glass and acrylic products for the custom picture framing market.
	The following table presents sales and operating income data for the Company’s four reporting segments, and on a consolidated basis, for the three months ended May 31, 2014, as compared to the corresponding period a year ago:
		Three Months Ended
	(In thousands)	May 31,			June 1,
		2014			2013
	Net Sales from operations
	Architectural Glass	$	79,634		$	74,803
	Architectural Services	51,616			46,476
	Architectural Framing Systems	64,222			44,446
	Large-Scale Optical	20,061			19,473
	Intersegment eliminations	(4,650		)	(5,887		)
	Net sales	$	210,883		$	179,311
	Operating Income (Loss) from operations
	Architectural Glass	$	2,800		$	1,371
	Architectural Services	184			(965		)
	Architectural Framing Systems	1,931			2,064
	Large-Scale Optical	3,964			4,698
	Corporate and other	(1,062		)	(1,053		)
	Operating income	$	7,817		$	6,115
	Due to the varying combinations and integration of individual window, storefront and curtainwall systems, the Company has determined that it is impractical to report product revenues generated by class of product, beyond the segment revenues currently reported.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	31-May-14
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Award transactions on stock options	'
	The following table summarizes the award transactions for the three months ended May 31, 2014:
		Options/SARs Outstanding
		Number of		Weighted		Weighted	Aggregate
		Shares		Average		Average	Intrinsic
				Exercise Price		Remaining	Value
						Contractual
						Life
	Outstanding at March 1, 2014	847,852		$	13.88
	Awards exercised	(20,791	)	14.44
	Awards canceled	(500	)	11.86
	Outstanding at May 31, 2014	826,561		$	13.87	5.3 Years	$	13,416,677
	Vested or expected to vest at May 31, 2014	826,561		$	13.87	5.3 Years	$	13,416,677
	Exercisable at May 31, 2014	676,390		$	15.1	4.9 Years	$	10,148,956
Nonvested share award transactions	'
	The following table summarizes the nonvested share award transactions, including nonvested share units, for the three months ended May 31, 2014:
		Nonvested Shares and Units
		Number of		Weighted
		Shares and		Average
		Units		Grant Date
				Fair Value
	Nonvested at March 1, 2014	575,064		$	16.89
	Granted(1)	144,486		26.7
	Vested	(269,929	)	15.53
	Canceled	—		—
	Nonvested at May 31, 2014	449,621		$	20.86
	-1	Includes 40,735 of shares granted and immediately vested for achievement above target for the fiscal 2012-2014 performance period. Nonvested share units of 117,765 (at target) were previously granted in fiscal 2012 for this performance period.

Earnings_per_Share_Tables

Earnings per Share (Tables)	3 Months Ended
	31-May-14
Earnings Per Share [Abstract]	'
Reconciliation of basic and diluted earnings per share	'
	The following table presents a reconciliation of the denominators used in the computation of basic and diluted earnings per share:
		Three Months Ended
	(In thousands, except per share data)	May 31,		June 1,
		2014		2013
	Basic earnings per share – weighted common shares outstanding	28,777		28,441
	Weighted average effect of nonvested share grants and assumed exercise of stock options	608		896
	Diluted earnings per share – weighted common shares and potential common shares outstanding	29,385		29,337
	Earnings per share – basic	$	0.21	$	0.15
	Earnings per share – diluted	0.21		0.14
	Stock options excluded from the calculation of earnings per share because the exercise price was greater than the average market price of the common shares	—		56

Inventories_Tables

Inventories (Tables)	3 Months Ended
	31-May-14
Inventory Disclosure [Abstract]	'
Components of inventories	'
	(In thousands)	May 31,		March 1,
		2014		2014
	Raw materials	$	18,828	$	17,975
	Work-in-process	10,903		9,700
	Finished goods	15,770		15,206
	Costs and earnings in excess of billings on uncompleted contracts	4,921		5,101
	Total inventories	$	50,422	$	47,982

Marketable_Securities_Tables

Marketable Securities (Tables)	3 Months Ended
	31-May-14
Marketable Securities [Abstract]	'
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale	'
	The amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale at May 31, 2014 and March 1, 2014, were as follows:
	(In thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated
									Fair
									Value
	May 31, 2014
	Municipal bonds	$	10,913	$	119	$	(234	)	$	10,798
	Total investments	$	10,913	$	119	$	(234	)	$	10,798
	March 1, 2014
	Municipal bonds	$	11,719	$	94	$	(336	)	$	11,477
	Total investments	$	11,719	$	94	$	(336	)	$	11,477
Schedule of amortized cost and estimated fair values of investments by contractual maturity	'
	The amortized cost and estimated fair values of investments at May 31, 2014, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities as borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
	(In thousands)	Amortized Cost		Estimated Market Value
	Due within one year	$	560	$	564
	Due after one year through five years	2,398		2,435
	Due after five years through 10 years	6,690		6,703
	Due after 10 years through 15 years	1,250		1,081
	Due beyond 15 years	15		15
	Total	$	10,913	$	10,798

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	31-May-14
Fair Value Disclosures [Abstract]	'
Financial assets and liabilities measured at fair value	'
	Financial assets and liabilities measured at fair value as of May 31, 2014 and March 1, 2014, are summarized below:
	(In thousands)	Quoted Prices in		Other		Unobservable		Total Fair
		Active Markets		Observable		Inputs		Value
		(Level 1)		Inputs		(Level 3)
				(Level 2)
	May 31, 2014
	Cash equivalents
	Money market funds	$	8,242	$	—	$	—	$	8,242
	Total cash equivalents	8,242		—		—		8,242
	Available for sale securities
	Municipal bonds	$	—	$	10,798	$	—	$	10,798
	Total available for sale securities	—		10,798		—		10,798
	Restricted investments
	Money market funds	$	1,742	$	—	$	—	$	1,742
	Total restricted investments	1,742		—		—		1,742
	Mutual fund investments
	Mutual funds	$	807	$	—	$	—	$	807
	Total mutual fund investments	807		—		—		807
	Total assets at fair value	$	10,791	$	10,798	$	—	$	21,589
	March 1, 2014
	Cash equivalents
	Money market funds	$	12,788	$	—	$	—	$	12,788
	Total cash equivalents	12,788		—		—		12,788
	Available for sale securities
	Municipal bonds	$	—	$	11,477	$	—	$	11,477
	Total available for sale securities	—		11,477		—		11,477
	Restricted investments
	Money market funds	$	2,540	$	—	$	—	$	2,540
	Total restricted investments	2,540		—		—		2,540
	Mutual fund investments
	Mutual funds	$	409	$	—	$	—	$	409
	Total mutual fund investments	409		—		—		409
	Foreign currency instruments
	Foreign currency instruments	$	—	$	98	$	—	$	98
	Total foreign currency instruments	$	—	$	98	$	—	$	98
	Total assets at fair value	$	15,737	$	11,575	$	—	$	27,312

Acquisitions_Tables

Acquisitions (Tables)	3 Months Ended
	31-May-14
Business Combinations [Abstract]	'
Business Acquisition, Pro Forma Information [Table Text Block]	'
	The following unaudited pro forma consolidated condensed financial results of operations for the three-months ended June 1, 2013 are presented as if the acquisition had been completed at the beginning of fiscal year 2014:
		Three Months Ended
	(In thousands, except per share data)	June 1, 2013
	Net sales	$	192,363
	Net income	4,523
	Earnings per share
	Basic	$	0.16
	Diluted	0.15

Goodwill_and_Other_Identifiabl1

Goodwill and Other Identifiable Intangible Assets (Tables)	3 Months Ended
	31-May-14
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of goodwill attributable to each business segment	'
	The carrying amount of goodwill attributable to each business segment as of the three months ended May 31, 2014 is detailed below.
	(In thousands)	Architectural Glass			Architectural Services			Architectural Framing Systems			Large-Scale		Total
											Optical
	Balance at March 2, 2013	$	27,002		$	1,120		$	22,663		$	10,557	$	61,342
	Goodwill acquired	—			—			18,254			—		18,254
	Foreign currency translation	(374		)	—			(1,201		)	—		(1,575		)
	Balance at March 1, 2014	26,628			1,120			39,716			10,557		78,021
	Foreign currency translation	115			—			426			—		541
	Balance at May 31, 2014	$	26,743		$	1,120		$	40,142		$	10,557	$	78,562
Schedule of finite lived intangible assets	'
	The following table provides the gross carrying amount of other intangible assets and related accumulated amortization:
		31-May-14
	(In thousands)	Gross			Accumulated			Foreign			Net
		Carrying			Amortization			Currency
		Amount						Translation
	Definite-lived intangible assets:
	Debt issue costs	$	3,453		$	(2,417	)	$	—		$	1,036
	Non-compete agreements	6,690			(6,261		)	7			436
	Customer relationships	25,677			(10,910		)	354			15,121
	Trademarks and other intangibles	8,275			(2,609		)	75			5,741
	Total definite-lived intangible assets	$	44,095		$	(22,197	)	$	436		$	22,334
	Indefinite-lived intangible assets:
	Trademarks	4,768			—			119			4,887
	Total intangible assets	$	48,863		$	(22,197	)	$	555		$	27,221
		March 1, 2014
	(In thousands)	Gross			Accumulated			Foreign			Net
		Carrying			Amortization			Currency
		Amount						Translation
	Definite-lived intangible assets:
	Debt issue costs	$	3,453		$	(2,370	)	$	—		$	1,083
	Non-compete agreements	6,767			(6,266		)	(35		)	466
	Customer relationships	26,862			(10,673		)	(1,077		)	15,112
	Trademarks and other intangibles	8,566			(2,546		)	(251		)	5,769
	Total definite-lived intangible assets	$	45,648		$	(21,855	)	$	(1,363	)	$	22,430
	Indefinite-lived intangible assets:
	Trademarks	5,104			—			(336		)	4,768
	Total intangible assets	$	50,752		$	(21,855	)	$	(1,699	)	$	27,198
Schedule of estimated future amortization expense for identifiable intangible assets	'
	At May 31, 2014, the estimated future amortization expense for definite-lived intangible assets for the remainder of fiscal 2015 and all of the following four fiscal years is as follows:
	(In thousands)	Remainder			Fiscal			Fiscal			Fiscal		Fiscal
		of Fiscal			2016			2017			2018		2019
		2015
	Estimated amortization expense	$	1,774		$	1,951		$	1,808		$	1,763	$	1,676

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	3 Months Ended
	31-May-14
Compensation and Retirement Disclosure [Abstract]	'
Components of net periodic benefit cost	'
	Components of net periodic benefit cost for the plans for the three-month periods ended May 31, 2014 and June 1, 2013, were as follows:
		Three Months Ended
	(In thousands)	May 31,			June 1,
		2014			2013
	Interest cost	$	138		$	134
	Expected return on assets	(43		)	(46		)
	Amortization of unrecognized net loss	44			59
	Net periodic benefit cost	$	139		$	147

Commitments_and_Contingent_Lia1

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	31-May-14
Commitments and Contingencies Disclosure [Abstract]	'
Future minimum rental payments under noncancelable operating leases	'
	Future minimum rental payments under non-cancelable operating leases are:
	(In thousands)	Remainder			Fiscal			Fiscal		Fiscal		Fiscal		Thereafter		Total
		of Fiscal			2016			2017		2018		2019
		2015
	Total minimum payments	$	7,166		$	8,822		$	7,041	$	5,492	$	6,983	$	2,933	$	38,437
Guarantees and warranties	'
	The Company’s warranty and claim accruals are detailed below.
		Three Months Ended
	(In thousands)	May 31,			June 1,
		2014			2013
	Balance at beginning of period	$	11,978		$	8,323
	Additional accruals	1,060			1,323
	Claims paid	(891		)	(857		)
	Balance at end of period	$	12,147		$	8,789

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	31-May-14
Segment Reporting [Abstract]	'
Sales and operating income data	'
	The following table presents sales and operating income data for the Company’s four reporting segments, and on a consolidated basis, for the three months ended May 31, 2014, as compared to the corresponding period a year ago:
		Three Months Ended
	(In thousands)	May 31,			June 1,
		2014			2013
	Net Sales from operations
	Architectural Glass	$	79,634		$	74,803
	Architectural Services	51,616			46,476
	Architectural Framing Systems	64,222			44,446
	Large-Scale Optical	20,061			19,473
	Intersegment eliminations	(4,650		)	(5,887		)
	Net sales	$	210,883		$	179,311
	Operating Income (Loss) from operations
	Architectural Glass	$	2,800		$	1,371
	Architectural Services	184			(965		)
	Architectural Framing Systems	1,931			2,064
	Large-Scale Optical	3,964			4,698
	Corporate and other	(1,062		)	(1,053		)
	Operating income	$	7,817		$	6,115

StockBased_Compensation_Detail

Stock-Based Compensation (Details 1) (USD $)	3 Months Ended
	31-May-14	31-May-14
Award transactions on stock options	'	'
Outstanding, Beginning	847,852	'
Outstanding shares awards exercised	-20,791	'
Outstanding shares awards canceled	-500	'
Outstanding, Ending	826,561	'
Outstanding shares vested or expected to vest	'	826,561
Outstanding shares exercisable	'	676,390
Award transactions on stock options, Weighted Average Exercise Price [Roll Forward]	'	'
Weighted average exercise price, Beginning	$13.88	'
Weighted average exercise price, Awards exercised	$14.44	'
Weighted average exercise price, Awards canceled	$11.86	'
Weighted average exercise price, Ending	$13.87	'
Weighted average exercise price, Vested or expected to vest	'	$13.87
Weighted average exercise price, Exercisable	'	$15.10
Weighted average remaining contractual life, Outstanding	'5 years 4 months 0 days	'
Weighted average remaining contractual life, Vested of expected to vest	'5 years 4 months 0 days	'
Weighted average remaining contractual life, Exercisable	'4 years 11 months 0 days	'
Aggregate intrinsic value, Outstanding	'	$13,416,677
Aggregate intrinsic value, Vested or expected to vest	'	13,416,677
Aggregate intrinsic value, Exercisable	'	$10,148,956

StockBased_Compensation_Detail1

Stock-Based Compensation (Details 2) (USD $)	3 Months Ended
	31-May-14	Mar. 01, 2014
Nonvested share award transactions	'	'
Number of shares, Granted	144,486	'
Number of shares, Vested	-269,929	'
Number of shares, Canceled	0	'
Nonvested Number, Ending	449,621	575,064
Nonvested share award transactions, Weighted Average Grant Date Fair Value [Roll Forward]	'	'
Weighted average grant date fair value, Granted	$26.70	'
Weighted average grant date fair value, Vested	$15.53	'
Weighted average grant date fair value, Canceled	$0	'
Weighted average grant date fair value, Ending	$20.86	$16.89

StockBased_Compensation_Detail2

Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	31-May-14	Jun. 01, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Share-based Compensation	$1,250	$1,118
Total unrecognized compensation related to stock options awards	100	'
Cash proceeds from exercise of stock options	200	1,400
Aggregate intrinsic value of securities	400	1,600
Performance shares granted	40,735	'
Number of performance share units granted	117,765	'
Total unrecognized compensation cost related to nonvested share	7,200	'
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted average period, Nonvested	'3 months	'
Restricted Stock [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Weighted average period, Nonvested	'25 months	'
Total fair value of shares vested	$8,500	'

Earnings_per_Share_Details

Earnings per Share (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	31-May-14	Jun. 01, 2013
Reconciliation of basic and diluted earnings per share	'	'
Basic earnings per share - weighted common shares outstanding	28,777	28,441
Incremental Common Shares Attributable to Share-based Payment Arrangements	608	896
Weighted Average Number of Shares Outstanding, Diluted	29,385	29,337
Earnings per share - basic	$0.21	$0.15
Earnings per share - diluted	$0.21	$0.14
Stock options excluded from the calculation of earnings per share because the exercise price was greater than the average market price of the common shares	0	56

Inventories_Details

Inventories (Details) (USD $)	31-May-14	Mar. 01, 2014
In Thousands, unless otherwise specified
Components of inventories	'	'
Raw materials	$18,828	$17,975
Work-in-process	10,903	9,700
Finished goods	15,770	15,206
Costs and earnings in excess of billings on uncompleted contracts	4,921	5,101
Total inventories	$50,422	$47,982

Marketable_Securities_Details

Marketable Securities (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	31-May-14	Mar. 01, 2014
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale	'	'
Amortized Cost	$10,913	$11,719
Gross Unrealized Gains	119	94
Gross Unrealized Losses	-234	-336
Estimated Market Value, Total	10,798	11,477
Municipal bonds [Member]	'	'
Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale	'	'
Amortized Cost	10,913	11,719
Gross Unrealized Gains	119	94
Gross Unrealized Losses	-234	-336
Estimated Market Value, Total	$10,798	$11,477

Marketable_Securities_Details_

Marketable Securities (Details 2) (USD $)	31-May-14	Mar. 01, 2014
In Thousands, unless otherwise specified
Schedule of amortized cost and estimated fair values of investments by contractual maturity	'	'
Amortized Cost, Due within one year	$560	'
Amortized Cost, Due after one year through five years	2,398	'
Amortized Cost, Due after five years through 10 years	6,690	'
Amortized Cost, Due after 10 years through 15 years	1,250	'
Amortized Cost, Due beyond 15 years	15	'
Amortized Cost, Total	10,913	'
Estimated Market Value, Due within one year	564	'
Estimated Market Value, Due after one year through five years	2,435	'
Estimated Market Value, Due after five years through 10 years	6,703	'
Estimated Market Value, Due after 10 years through 15 years	1,081	'
Estimated Market Value, Due beyond 15 years	15	'
Estimated Market Value, Total	$10,798	$11,477

Marketable_Securities_Details_1

Marketable Securities (Details Textual) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Mar. 01, 2014
Marketable Securities (Textual) [Abstract]	'	'
Investments, Total	$10,800	'
Short-term available for sale securities	564	204
Available-for-sale Securities, Debt Securities, Noncurrent	10,234	11,273
Greater Than or Equal to 12 Months, Fair Value	3,737	'
Greater Than or Equal to 12 Months, Unrealized Losses	($234)	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	31-May-14	Mar. 01, 2014
In Thousands, unless otherwise specified
Cash equivalents	'	'
Total cash equivalents	$8,242	$12,788
Available for sale securities	'	'
Available-for-sale Securities	10,798	11,477
Restricted investments	'	'
Total restricted investments	1,742	2,540
Mutual fund investments	'	'
Total mutual fund investments	807	409
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	98
Total assets at fair value	21,589	27,312
Money market funds [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	8,242	12,788
Restricted investments	'	'
Total restricted investments	1,742	2,540
Municipal bonds [Member]	'	'
Available for sale securities	'	'
Available-for-sale Securities	10,798	11,477
Mutual funds [Member]	'	'
Mutual fund investments	'	'
Total mutual fund investments	807	409
Foreign Exchange Contract [Member]	'	'
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	98
Quoted Prices in Active Markets (Level 1) [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	8,242	12,788
Available for sale securities	'	'
Available-for-sale Securities	0	0
Restricted investments	'	'
Total restricted investments	1,742	2,540
Mutual fund investments	'	'
Total mutual fund investments	807	409
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	0
Total assets at fair value	10,791	15,737
Quoted Prices in Active Markets (Level 1) [Member] | Money market funds [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	8,242	12,788
Restricted investments	'	'
Total restricted investments	1,742	2,540
Quoted Prices in Active Markets (Level 1) [Member] | Municipal bonds [Member]	'	'
Available for sale securities	'	'
Available-for-sale Securities	0	0
Quoted Prices in Active Markets (Level 1) [Member] | Mutual funds [Member]	'	'
Mutual fund investments	'	'
Total mutual fund investments	807	409
Quoted Prices in Active Markets (Level 1) [Member] | Foreign Exchange Contract [Member]	'	'
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	0
Other Observable Inputs (Level 2) [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	0	0
Available for sale securities	'	'
Available-for-sale Securities	10,798	11,477
Restricted investments	'	'
Total restricted investments	0	0
Mutual fund investments	'	'
Total mutual fund investments	0	0
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	98
Total assets at fair value	10,798	11,575
Other Observable Inputs (Level 2) [Member] | Money market funds [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	0	0
Restricted investments	'	'
Total restricted investments	0	0
Other Observable Inputs (Level 2) [Member] | Municipal bonds [Member]	'	'
Available for sale securities	'	'
Available-for-sale Securities	10,798	11,477
Other Observable Inputs (Level 2) [Member] | Mutual funds [Member]	'	'
Mutual fund investments	'	'
Total mutual fund investments	0	0
Other Observable Inputs (Level 2) [Member] | Foreign Exchange Contract [Member]	'	'
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	98
Unobservable Inputs (Level 3) [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	0	0
Available for sale securities	'	'
Available-for-sale Securities	0	0
Restricted investments	'	'
Total restricted investments	0	0
Mutual fund investments	'	'
Total mutual fund investments	0	0
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	0
Total assets at fair value	0	0
Unobservable Inputs (Level 3) [Member] | Money market funds [Member]	'	'
Cash equivalents	'	'
Total cash equivalents	0	0
Restricted investments	'	'
Total restricted investments	0	0
Unobservable Inputs (Level 3) [Member] | Municipal bonds [Member]	'	'
Available for sale securities	'	'
Available-for-sale Securities	0	0
Unobservable Inputs (Level 3) [Member] | Mutual funds [Member]	'	'
Mutual fund investments	'	'
Total mutual fund investments	0	0
Unobservable Inputs (Level 3) [Member] | Foreign Exchange Contract [Member]	'	'
Derivative Instruments and Hedges, Assets [Abstract]	'	'
Foreign Currency Contract, Asset, Fair Value Disclosure	'	$0

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details Textual) (USD $)	31-May-14	Mar. 01, 2014
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Short-term available for sale securities	$564	$204
Available-for-sale Securities, Debt Securities, Noncurrent	10,234	11,273
Restricted Cash and Cash Equivalents, Noncurrent	1,742	2,540
Mutual fund investments	$800	'

Acquisition_Details_1

Acquisition (Details 1) (Alumicor Limited [Member], USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 01, 2013
Alumicor Limited [Member]	'
Business Acquisition [Line Items]	'
Business Acquisition, Pro Forma Revenue	$192,363
Business Acquisition, Pro Forma Net Income (Loss)	$4,523
Business Acquisition, Pro Forma Earnings Per Share, Basic	$0.16
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$0.15

Acquisition_Details_Textual

Acquisition (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Mar. 01, 2014
Business Combinations [Abstract]	'
Business Acquisition, Cost of Acquired Entity, Cash Paid	$52,900
Cash Acquired from Acquisition	$1,600

Goodwill_and_Other_Identifiabl2

Goodwill and Other Identifiable Intangible Assets (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	31-May-14	Mar. 01, 2014
Schedule of goodwill attributable to each business segment	'	'
Goodwill, Beginning	$78,021	$61,342
Goodwill, Acquired During Period	'	18,254
Foreign currency translation	541	-1,575
Goodwill, Ending	78,562	78,021
Architectural Glass [Member]	'	'
Schedule of goodwill attributable to each business segment	'	'
Goodwill, Beginning	26,628	27,002
Goodwill, Acquired During Period	'	0
Foreign currency translation	115	-374
Goodwill, Ending	26,743	26,628
Architectural Services segment [Member]	'	'
Schedule of goodwill attributable to each business segment	'	'
Goodwill, Beginning	1,120	1,120
Goodwill, Acquired During Period	'	0
Foreign currency translation	0	0
Goodwill, Ending	1,120	1,120
Architectural Framing Systems Segment [Member]	'	'
Schedule of goodwill attributable to each business segment	'	'
Goodwill, Beginning	39,716	22,663
Goodwill, Acquired During Period	'	18,254
Foreign currency translation	426	-1,201
Goodwill, Ending	40,142	39,716
Large-Scale Optical [Member]	'	'
Schedule of goodwill attributable to each business segment	'	'
Goodwill, Beginning	10,557	10,557
Goodwill, Acquired During Period	'	0
Foreign currency translation	0	0
Goodwill, Ending	$10,557	$10,557

Goodwill_and_Other_Identifiabl3

Goodwill and Other Identifiable Intangible Assets (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013	Mar. 01, 2014
Schedule of finite lived identifiable intangible assets	'	'	'
Gross Carrying Amount	$44,095	'	$45,648
Accumulated Amortization	-22,197	'	-21,855
Foreign Currency Translation	436	'	-1,363
Net	22,334	'	22,430
Intangible Assets, Gross (Excluding Goodwill)	48,863	'	50,752
Intangible Assets Accumulated Amortization	-22,197	'	-21,855
Intangible Assets Foreign Currency Translation	555	'	-1,699
Intangible Assets, Net (Excluding Goodwill)	27,221	'	27,198
Debt issue costs [Member]	'	'	'
Schedule of finite lived identifiable intangible assets	'	'	'
Gross Carrying Amount	3,453	'	3,453
Accumulated Amortization	-2,417	'	-2,370
Foreign Currency Translation	0	'	0
Net	1,036	'	1,083
Noncompete Agreements [Member]	'	'	'
Schedule of finite lived identifiable intangible assets	'	'	'
Gross Carrying Amount	6,690	'	6,767
Accumulated Amortization	-6,261	'	-6,266
Foreign Currency Translation	7	'	-35
Net	436	'	466
Customer Relationships [Member]	'	'	'
Schedule of finite lived identifiable intangible assets	'	'	'
Gross Carrying Amount	25,677	'	26,862
Accumulated Amortization	-10,910	'	-10,673
Foreign Currency Translation	354	'	-1,077
Net	15,121	'	15,112
Trademarks [Member]	'	'	'
Schedule of finite lived identifiable intangible assets	'	'	'
Gross Carrying Amount	8,275	'	8,566
Accumulated Amortization	-2,609	'	-2,546
Foreign Currency Translation	75	'	-251
Net	5,741	'	5,769
Indefinite-Lived Intangible Assets (Excluding Goodwill)	4,768	'	5,104
Indefinite-lived Intangible Assets, Translation Adjustments	119	-336	'
Indefinite-lived Intangible Assets (Excluding Goodwill), Net of translation adjustments	$4,887	'	$4,768

Goodwill_and_Other_Identifiabl4

Goodwill and Other Identifiable Intangible Assets (Details 2) (USD $)	31-May-14
In Thousands, unless otherwise specified
Schedule of estimated future amortization expense for identifiable intangible assets	'
Estimated amortization expense, Remainder of Fiscal 2015	$1,774
Estimated amortization expense, Fiscal 2016	1,951
Estimated amortization expense, Fiscal 2017	1,808
Estimated amortization expense, Fiscal 2018	1,763
Estimated amortization expense, Fiscal 2019	$1,676

Goodwill_and_Other_Identifiabl5

Goodwill and Other Identifiable Intangible Assets (Details Textual) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Goodwill and Other Identifiable Intangible Assets (Textual) [Abstract]	'	'
Amortization expense on identifiable intangible assets	$500	$400

Debt_Details

Debt (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013	Mar. 01, 2014
Debt (Textual) [Abstract]	'	'	'
Line of Credit Facility, Maximum Borrowing Capacity	$100,000	'	'
Line of Credit Facility, Expiration Date	20-Nov-18	'	'
Line of Credit Facility, Amount Outstanding	0	'	0
Minimum net worth required	292,700	'	'
Net Worth	356,700	'	'
Adjusted debt-to-EBITDA ratio	0.28	'	'
Decrease in non-credit facility debt	25,000	'	'
Excess of non credit facility debt on unrestricted cash balances, cash equivalents and short-term marketable securities available for sale	15,000	'	'
Interest payments	100	200	'
Maximum [Member]	'	'	'
Debt (Textual) [Abstract]	'	'	'
Adjusted debt-to-EBITDA ratio	3	'	'
Industrial Revenue Bonds [Member]	'	'	'
Debt (Textual) [Abstract]	'	'	'
Debt	20,400	'	'
Notes Payable, Other Payables [Member]	'	'	'
Debt (Textual) [Abstract]	'	'	'
Debt	$300	'	'

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Components of net periodic benefit cost	'	'
Interest cost	$138	$134
Expected return on assets	-43	-46
Amortization of unrecognized net loss	44	59
Net periodic benefit cost	$139	$147

Income_Taxes_Details

Income Taxes (Details) (USD $)	31-May-14	Mar. 01, 2014
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Liability for Uncertain Tax Positions, Noncurrent	$5,367	$5,234
UnrecognizedTaxBenefitsReductionsResultingFromSettlementsWithTaxingAuthoritiesAndLapseOfApplicableStatuteOfLimitations	$400	'

Commitments_and_Contingent_Lia2

Commitments and Contingent Liabilities (Details) (USD $)	31-May-14
In Thousands, unless otherwise specified
Future minimum rental payments under noncancelable operating leases	'
Total minimum payments, Remainder of Fiscal 2015	$7,166
Total minimum payments, Fiscal 2016	8,822
Total minimum payments, Fiscal 2017	7,041
Total minimum payments, Fiscal 2018	5,492
Total minimum payments, Fiscal 2019	6,983
Total minimum payments, Thereafter	2,933
Total	$38,437

Commitments_and_Contingent_Lia3

Commitments and Contingent Liabilities (Details 1) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Guarantees and warranties	'	'
Balance at beginning of period	$11,978	$8,323
Additional accruals	1,060	1,323
Claims paid	-891	-857
Balance at end of period	$12,147	$8,789

Commitments_and_Contingent_Lia4

Commitments and Contingent Liabilities (Details Textual) (USD $)	31-May-14
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
Company's backlog bonded by performance bonds	$81,600
Face value of performance bonds	278,100
Total value of letter of credit	23,500
Line of Credit Facility, Maximum Borrowing Capacity	100,000
Purchase obligations	$85,200

Segment_Information_Segment_In

Segment Information Segment Information (Details Textual)	3 Months Ended
	31-May-14
	Reportable_Segment
	Segment
Segment Information [Abstract]	'
Number of Reportable Segments	4
Number of Operating Segments	4

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	31-May-14	Jun. 01, 2013
Sales and operating income data	'	'
Net sales	$210,883	$179,311
Operating income (loss)	7,817	6,115
Architectural Glass [Member]	'	'
Sales and operating income data	'	'
Net sales	79,634	74,803
Operating income (loss)	2,800	1,371
Architectural Services segment [Member]	'	'
Sales and operating income data	'	'
Net sales	51,616	46,476
Operating income (loss)	184	-965
Architectural Framing Systems Segment [Member]	'	'
Sales and operating income data	'	'
Net sales	64,222	44,446
Operating income (loss)	1,931	2,064
Large-Scale Optical [Member]	'	'
Sales and operating income data	'	'
Net sales	20,061	19,473
Operating income (loss)	3,964	4,698
Intersegment eliminations [Member]	'	'
Sales and operating income data	'	'
Net sales	-4,650	-5,887
Corporate and other [Member]	'	'
Sales and operating income data	'	'
Operating income (loss)	($1,062)	($1,053)