Daktronics (DAKT) 10-Q 30 Aug 19 2020 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Aug. 03, 2019	Aug. 26, 2019
Entity Information [Line Items]
Entity Registrant Name	DAKTRONICS INC /SD/
Entity Central Index Key	0000915779
Current Fiscal Year End Date	--05-02
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		44,951,204
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 3, 2019

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Aug. 03, 2019	Apr. 27, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 20,762	$ 35,383
Restricted cash	339	359
Marketable securities	11,878	26,344
Accounts receivable, net	96,218	65,487
Inventories	85,458	78,832
Contract assets	42,809	33,704
Current maturities of long-term receivables	3,997	2,300
Prepaid expenses and other current assets	9,558	8,319
Income tax receivables	1,038	1,087
Property and equipment and other assets available for sale	1,844	1,858
Total current assets	273,901	253,673
Property and equipment, net	66,707	65,314
Long-term receivables, less current maturities	2,163	1,214
Goodwill	7,940	7,889
Intangibles, net	4,568	4,906
Investment in affiliates and other assets	15,361	5,052
Deferred income taxes	11,189	11,168
TOTAL ASSETS	381,829	349,216
CURRENT LIABILITIES:
Accounts payable	57,001	44,873
Contract liabilities	53,421	47,178
Accrued expenses	32,850	32,061
Warranty obligations	9,650	9,492
Income taxes payable	771	468
Total current liabilities	153,693	134,072
Long-term warranty obligations	15,800	14,978
Long-term contract liabilities	10,140	10,053
Other long-term obligations	8,732	1,339
Long-term income taxes payable	727	578
Deferred income taxes	544	533
Total long-term liabilities	35,943	27,481
SHAREHOLDERS' EQUITY:
Common Stock, no par value, authorized 115,000,000 shares; 45,442,607 and 45,317,267 shares issued at August 3, 2019 and April 27, 2019, respectively	58,478	57,699
Additional paid-in capital	43,204	42,561
Retained earnings	98,373	93,593
Treasury Stock, at cost, 490,617 and 303,957 shares at August 3, 2019 and April 27, 2019, respectively	(3,021)	(1,834)
Accumulated other comprehensive loss	(4,841)	(4,356)
TOTAL SHAREHOLDERS' EQUITY	192,193	187,663
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 381,829	$ 349,216

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Aug. 03, 2019	Apr. 27, 2019
SHAREHOLDERS' EQUITY:
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	115,000,000	115,000,000
Common stock, issued (in shares)	45,442,607	45,317,267
Treasury stock, at cost (in shares)	490,617	303,957

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Income Statement [Abstract]
Net sales	$ 180,256	$ 154,188
Cost of sales	134,751	115,941
Gross profit	45,505	38,247
Operating expenses:
Selling	18,297	16,378
General and administrative	9,093	8,537
Product design and development	10,500	9,292
Total operating expenses	37,890	34,207
Operating income	7,615	4,040
Nonoperating income (expense):
Interest income	269	197
Interest expense	(35)	(39)
Other income (expense), net	193	(154)
Income before income taxes	8,042	4,044
Income tax expense (benefit)	1,012	(530)
Net income	$ 7,030	$ 4,574
Weighted average shares outstanding:
Basic (in shares)	45,089	44,638
Diluted (in shares)	45,261	44,831
Earnings per share:
Basic (in dollars per share)	$ 0.16	$ 0.10
Diluted (in dollars per share)	$ 0.16	$ 0.10

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 7,030	$ 4,574
Other comprehensive loss:
Cumulative translation adjustments	(526)	(1,139)
Unrealized gain (loss) on available-for-sale securities, net of tax	41	(13)
Total other comprehensive loss, net of tax	(485)	(1,152)
Comprehensive income	$ 6,545	$ 3,422

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Beginning of Period at Apr. 28, 2018	$ 197,616	$ 54,731	$ 40,328	$ 107,105	$ (1,834)	$ (2,714)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,574			4,574
Cumulative translation adjustments	(1,139)					(1,139)
Unrealized gain (loss) on available-for-sale securities, net of tax	(13)					(13)
Share-based compensation	651		651
Exercise of stock options	57	57	0
Employee savings plan activity	820	820
Dividends paid	(3,121)			(3,121)
Balance at End of Period at Jul. 28, 2018	199,445	55,608	40,979	108,558	(1,834)	(3,866)
Balance at Beginning of Period at Apr. 27, 2019	187,663	57,699	42,561	93,593	(1,834)	(4,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,030			7,030
Cumulative translation adjustments	(526)					(526)
Unrealized gain (loss) on available-for-sale securities, net of tax	41					41
Share-based compensation	643		643
Employee savings plan activity	779	779
Dividends paid	(2,250)			(2,250)
Treasury stock purchase	1,187				1,187
Balance at End of Period at Aug. 03, 2019	$ 192,193	$ 58,478	$ 43,204	$ 98,373	$ (3,021)	$ (4,841)

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share	$ 0.05	$ 0.07

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 7,030	$ 4,574
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	4,383	4,488
Loss on sale of property, equipment and other assets	(26)	(69)
Share-based compensation	643	651
Equity in loss of affiliate	118	134
Provision for doubtful accounts	5	(29)
Deferred income taxes, net	(40)	(65)
Change in operating assets and liabilities	(30,331)	(19,944)
Net cash used in operating activities	(18,218)	(10,260)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(5,856)	(4,727)
Proceeds from sales of property, equipment and other assets	73	106
Purchases of marketable securities	0	(1,986)
Proceeds from sales or maturities of marketable securities	14,510	9,181
Purchases of and loans to equity investment	(455)	(426)
Acquisitions, net of cash acquired	0	2,250
Net cash provided by (used in) investing activities	8,272	(102)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on long-term obligations	(1,221)	(458)
Dividends paid	(2,250)	(3,121)
Proceeds from exercise of stock options	0	57
Payments for common shares repurchased	1,187	0
Net cash used in financing activities	(4,658)	(3,522)
EFFECT OF EXCHANGE RATE CHANGES	(37)	70
NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(14,641)	(13,814)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	35,742	29,755
End of period	21,101	15,941
Cash payments for:
Interest	33	59
Income taxes, net of refunds	491	614
Supplemental schedule of non-cash investing and financing activities:
Demonstration equipment transferred to inventory	0	58
Purchases of property and equipment included in accounts payable	786	833
Contributions of common stock under the ESPP	779	820
Contingent consideration related to acquisition	$ 0	$ 1,316

Basis of Presentation

Basis of Presentation	3 Months Ended
	Aug. 03, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Summary of Critical Accounting Policies	Note 1. Basis of Presentation Daktronics, Inc. and its subsidiaries (the “Company”, “Daktronics”, “we”, “our”, or “us”) are the world's industry leader in designing and manufacturing electronic scoreboards, programmable display systems and large screen video displays for sporting, commercial and transportation applications. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments (consisting of normal recurring adjustments) necessary to fairly present our financial position, results of operations and cash flows for the periods presented. The preparation of financial statements in conformity with generally accepted accounting principles in the United States ("GAAP") requires management to make estimates and assumptions affecting the reported amounts therein. Due to the inherent uncertainty involved in making estimates, actual results in future periods may differ from those estimates. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. The balance sheet at April 27, 2019 , has been derived from the audited financial statements at that date, but it does not include all the information and footnotes required by GAAP for complete financial statements. These financial statements should be read in conjunction with our financial statements and notes thereto for the year ended April 27, 2019 , which are contained in our Annual Report on Form 10-K previously filed with the Securities and Exchange Commission ("SEC"). The results of operations for the interim periods presented are not necessarily indicative of results that may be expected for any other interim period or for the full fiscal year. Daktronics, Inc. operates on a 52- or 53-week fiscal year, with our fiscal year ending on the Saturday closest to April 30 of each year. When April 30 falls on a Wednesday, the fiscal year ends on the preceding Saturday. Within each fiscal year, each quarter is comprised of 13-week periods following the beginning of each fiscal year. In each 53-week year, an additional week is added to the first quarter, and each of the last three quarters is comprised of a 13-week period. The fiscal year ended April 27, 2019 consisted of 52 weeks. Fiscal 2020 will be a 53-week year; therefore, the quarter ended August 3, 2019 contains operating results for 14 weeks while the quarter ended July 28, 2018 contains operating results for 13 weeks. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets that sum to the totals of the same amounts shown in the condensed consolidated statement of cash flows: August 3, July 28, Cash and cash equivalents $ 20,762 $ 15,915 Restricted cash 339 26 Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows $ 21,101 $ 15,941 Recent Accounting Pronouncements There have been no material changes to our significant accounting policies and estimates as described in our Annual Report on Form 10-K for the fiscal year ended April 27, 2019 , other than described in the Accounting Standards Adopted section below. Accounting Standards Adopted In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842) , which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of their classification. ASU 2016-02 requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases) and ASU 2018-11, Leases (Topic 842), Targeted Improvements , which provide (i) narrow amendments to clarify how to apply certain aspects of the new lease standard, (ii) entities with an additional transition method to adopt the new standard, and (iii) lessors with a practical expedient for separating components of a contract. We adopted ASU 2016-02 and its related guidance during the first quarter of fiscal 2020 for all agreements existing as of April 28, 2019. We elected the "comparatives under Accounting Standards Codification ("ASC") 840 option" as a transitional method, which allows us to initially apply the new lease requirements at the effective date. Comparative periods were not adjusted and will continue to be reported in accordance with prior lease guidance under ASC 840. We elected the package of practical expedients, which permits us not to reassess our prior conclusions about lease identification, lease classification and initial direct costs. In addition, we have elected the short-term lease recognition whereby we will not recognize operating leases related assets or liabilities for leases with a lease term of less than one year. We have also elected the practical expedient to not separate lease and non-lease components in the lease payments for all asset classes. This adoption did not have an impact on our condensed consolidated statements of operations, shareholders' equity and cash flows, and there was no adjustment to retained earnings. As of April 28, 2019, we recognized a right of use asset for operating leases of $11,101 and a current and non-current lease liability for operating leases of $2,745 and $8,356 , respectively. The right of use operating assets are included in the " Investment in affiliates and other assets " line item, the current lease liabilities are included in the " Accrued expenses " line item, and the non-current lease liabilities are included in the " Other long-term obligations " line item in our condensed consolidated balance sheet. See " Note 12. Leases " for more information. Accounting Standards Not Yet Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019 and will require adoption on a prospective basis. We are currently evaluating the effect that adopting ASU 2017-04 will have on our condensed consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, and will require adoption on a modified retrospective basis. We are currently evaluating the effect that adopting ASU 2016-13 will have on our condensed consolidated financial statements and related disclosures.

Investments in Affiliates Inves

Investments in Affiliates Investment in Affiliates	3 Months Ended
	Aug. 03, 2019
Equity and Cost Method Investments [Abstract]
Cost and Equity Method Investments Disclosure [Text Block]	Note 2. Investments in Affiliates Investments in affiliates over which we have significant influence are accounted for under the equity method of accounting in accordance with the provisions of ASC 323, Investments – Equity Method and Joint Ventures . Investments in affiliates over which we do not have the ability to exert significant influence over the affiliate's operating and financing activities are accounted for under the cost method of accounting in accordance with the provisions of ASC 321, Investments – Equity Securities . We have evaluated our relationships with our affiliates and have determined that these entities are not variable interest entities. The aggregate amount of investments accounted for under the equity method was $3,538 and $3,657 at August 3, 2019 and April 27, 2019 , respectively. The equity method requires us to report our share of losses up to our equity investment amount. Cash paid for investments in affiliates and loans to affiliates are included in the "Purchases of and loans to equity investment" line item in our condensed consolidated statements of cash flows. Our proportional share of the respective affiliates' earnings or losses is included in the " Other income (expense), net " line item in our condensed consolidated statements of operations. For the three months ended August 3, 2019 and July 28, 2018 , our share of the losses of our affiliates was $118 and $134 , respectively. The aggregate amount of investments without readily determinable fair values was $ 42 at August 3, 2019 and April 27, 2019 , respectively. There have not been any identified events or changes in circumstances that may have a significant adverse effect on their fair value, and it is not practical to estimate their fair value. We record equity investments without readily determinable fair values at cost, less any impairment, adjusted for observable price changes. During the three months ended August 3, 2019 , we did not record any changes in the measurement of such investments.

Earnings Per Share EPS

Earnings Per Share EPS	3 Months Ended
	Aug. 03, 2019
Earnings Per Share [Abstract]
Earnings Per Share EPS	Note 3. Earnings Per Share ("EPS") We follow the provisions of ASC 260, Earnings Per Share , where basic EPS is computed by dividing income attributable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution which may occur if securities or other obligations to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock which share in our earnings. The following is a reconciliation of the net income and common share amounts used in the calculation of basic and diluted EPS for the three months ended August 3, 2019 and July 28, 2018 : Net income Shares Per share income For the three months ended August 3, 2019 Basic earnings per share $ 7,030 45,089 $ 0.16 Dilution associated with stock compensation plans — 172 — Diluted earnings per share $ 7,030 45,261 $ 0.16 For the three months ended July 28, 2018 Basic earnings per share $ 4,574 44,638 $ 0.10 Dilution associated with stock compensation plans — 193 — Diluted earnings per share $ 4,574 44,831 $ 0.10 Options outstanding to purchase 2,197 shares of common stock with a weighted average exercise price of $10.03 for the three months ended August 3, 2019 and 1,798 shares of common stock with a weighted average exercise price of $10.46 for the three months ended July 28, 2018 were not included in the computation of diluted earnings per share because the effects would be anti-dilutive.

Revenue Recognition Revenue Rec

Revenue Recognition Revenue Recognition	3 Months Ended
	Aug. 03, 2019
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Note 4. Revenue Recognition Disaggregation of revenue In accordance with ASC 606-10-50, we disaggregate revenue from contracts with customers by the type of performance obligation and the timing of revenue recognition. We determine that disaggregating revenue in these categories achieves the disclosure objective to depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors and to enable users of financial statements to understand the relationship to each reportable segment. The following table presents our disaggregation of revenue by segments: Three Months Ended August 3, 2019 Commercial Live Events High School Park and Recreation Transportation International Total Type of performance obligation Unique configuration $ 12,965 $ 45,587 $ 6,030 $ 11,897 $ 15,678 $ 92,157 Limited configuration 27,235 7,713 23,800 6,587 9,930 75,265 Service and other 3,835 6,006 635 534 1,824 12,834 $ 44,035 $ 59,306 $ 30,465 $ 19,018 $ 27,432 $ 180,256 Timing of revenue recognition Goods/services transferred at a point in time $ 27,703 $ 9,120 $ 22,599 $ 6,697 $ 10,188 $ 76,307 Goods/services transferred over time 16,332 50,186 7,866 12,321 17,244 103,949 $ 44,035 $ 59,306 $ 30,465 $ 19,018 $ 27,432 $ 180,256 Three Months Ended July 28, 2018 Commercial Live Events High School Park and Recreation Transportation International Total Type of performance obligation Unique configuration $ 3,049 $ 38,921 $ 8,943 $ 9,618 $ 16,216 $ 76,747 Limited configuration 23,867 5,818 18,547 7,083 10,778 66,093 Service and other 3,653 4,733 630 456 1,876 11,348 $ 30,569 $ 49,472 $ 28,120 $ 17,157 $ 28,870 $ 154,188 Timing of revenue recognition Goods/services transferred at a point in time $ 24,583 $ 6,802 $ 16,998 $ 7,232 $ 11,536 $ 67,151 Goods/services transferred over time 5,986 42,670 11,122 9,925 17,334 87,037 $ 30,569 $ 49,472 $ 28,120 $ 17,157 $ 28,870 $ 154,188 See " Note 5. Segment Reporting " for a disaggregation of revenue by geography. Contract balances Contract assets represent revenue recognized in excess of amounts billed and include unbilled receivables. Unbilled receivables, which represent an unconditional right to payment subject only to the passage of time, are reclassified to accounts receivable when they are billed under the contract terms. Contract liabilities represent amounts billed to the clients in excess of revenue recognized to date. The following table reflects the changes in our contract assets and liabilities: August 3, 2019 April 27, 2019 Dollar Change Percent Change Contract assets $ 42,809 $ 33,704 $ 9,105 27.0 % Contract liabilities - current 53,421 47,178 6,243 13.2 Contract liabilities - noncurrent 10,140 10,053 87 0.9 The changes in our contract assets and contract liabilities from April 27, 2019 to August 3, 2019 were due to the timing of billing schedules and revenue recognition, which can vary significantly depending on the contractual payment terms and the seasonality of the sports markets. We had no material impairments of contract assets for the three months ended August 3, 2019 . As of April 27, 2019 , we had six contracts in progress that were identified as loss contracts, for which we recorded a provision for losses of $2,353 and had four remaining contracts with loss estimates of $531 as of August 3, 2019 . These were included in the "Accrued expenses" line item in our condensed consolidated balance sheets. During the three months ended August 3, 2019 , we recognized revenue of $31,259 related to our contract liabilities as of April 27, 2019 . Remaining performance obligations As of August 3, 2019 , the aggregate amount of the transaction price allocated to the remaining performance obligations was $263,406 . We expect approximately $226,999 of our remaining performance obligations to be recognized over the next 12 months with the remainder recognized thereafter. Remaining performance obligations related to product and service agreements are $206,990 and $56,416 , respectively. Although remaining performance obligations reflect business that is considered to be legally binding, cancellations, deferrals or scope adjustments may occur. Any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals are reflected or excluded in the remaining performance obligation balance, as appropriate.

Segment Disclosure

Segment Disclosure	3 Months Ended
	Aug. 03, 2019
Segment Reporting [Abstract]
Segment Disclosure	Note 5. Segment Reporting We organize and manage our business by the following five segments which meet the definition of reportable segments under ASC 280-10, Segment Reporting : Commercial, Live Events, High School Park and Recreation, Transportation, and International. These segments are based on the customer type or geography and are the same as our business units. We evaluate segment performance based on operating results through contribution margin, which is comprised of gross profit less selling expense. We exclude general and administration expense, product design and development expense, non-operating income and expense, and income tax expense in the segment analysis. Separate financial information is available and regularly evaluated by our chief operating decision-maker (CODM), who is our president and chief executive officer, in making resource allocation decisions for our segments. The following table sets forth certain financial information for each of our five reporting segments for the periods indicated: Three Months Ended August 3, July 28, Net sales: Commercial $ 44,035 $ 30,569 Live Events 59,306 49,472 High School Park and Recreation 30,465 28,120 Transportation 19,018 17,157 International 27,432 28,870 180,256 154,188 Gross profit: Commercial 9,218 6,894 Live Events 12,737 10,233 High School Park and Recreation 10,187 9,502 Transportation 6,754 5,451 International 6,609 6,167 45,505 38,247 Contribution margin: (1) Commercial 4,084 2,474 Live Events 8,872 6,985 High School Park and Recreation 6,592 6,552 Transportation 5,452 4,295 International 2,208 1,563 27,208 21,869 Non-allocated operating expenses: General and administrative 9,093 8,537 Product design and development 10,500 9,292 Operating income 7,615 4,040 Nonoperating income (expense): Interest income 269 197 Interest expense (35 ) (39 ) Other income (expense), net 193 (154 ) Income before income taxes 8,042 4,044 Income tax expense (benefit) 1,012 (530 ) Net income $ 7,030 $ 4,574 Depreciation and amortization: Commercial $ 974 $ 1,178 Live Events 1,398 1,172 High School Park and Recreation 512 443 Transportation 264 274 International 524 700 Unallocated corporate depreciation 711 721 $ 4,383 $ 4,488 (1) Contribution margin consists of gross profit less selling expense. No single geographic area comprises a material amount of our net sales or property and equipment, net of accumulated depreciation, other than the United States. The following table presents information about net sales and property and equipment, net of accumulated depreciation, in the United States and elsewhere: Three Months Ended August 3, July 28, Net sales: United States $ 149,460 $ 121,325 Outside United States 30,796 32,863 $ 180,256 $ 154,188 August 3, April 27, Property and equipment, net of accumulated depreciation: United States $ 59,446 $ 59,192 Outside United States 7,261 6,122 $ 66,707 $ 65,314 We have numerous customers worldwide for sales of our products and services, and no customer accounted for 10% or more of net sales; therefore, we are not economically dependent on a limited number of customers for the sale of our products and services. We have numerous raw material and component suppliers, and no supplier accounts for 10% or more of our cost of sales; however, we have a number of single-source suppliers that could limit our supply or cause delays in obtaining raw material and components needed in manufacturing.

Marketable Securities

Marketable Securities	3 Months Ended
	Aug. 03, 2019
Marketable Securities [Abstract]
Marketable Securities	Note 6. Marketable Securities We have a cash management program which provides for the investment of cash balances not used in current operations. We classify our investments in marketable securities as available-for-sale in accordance with the provisions of ASC 320, Investments – Debt and Equity Securities. Marketable securities classified as available-for-sale are reported at fair value with unrealized gains or losses, net of tax, reported in accumulated other comprehensive loss in the condensed consolidated balance sheets. As it relates to fixed income marketable securities, it is not likely we will be required to sell any of these investments before recovery of the entire amortized cost basis. In addition, as of August 3, 2019 , we anticipate we will recover the entire amortized cost basis of such fixed income securities, and we have determined no other-than-temporary impairments associated with credit losses were required to be recognized. The cost of securities sold is based on the specific identification method. Where quoted market prices are not available, we use the market price of similar types of securities traded in the market to estimate fair value. As of August 3, 2019 and April 27, 2019 , our available-for-sale securities consisted of the following: Amortized Cost Unrealized Losses Fair Value Balance as of August 3, 2019 Certificates of deposit $ 3,464 $ — $ 3,464 U.S. Government securities 1,000 — 1,000 U.S. Government sponsored entities 5,913 (2 ) 5,911 Municipal bonds 1,503 — 1,503 $ 11,880 $ (2 ) $ 11,878 Balance as of April 27, 2019 Certificates of deposit $ 3,464 $ — $ 3,464 U.S. Government securities 10,779 (5 ) 10,774 U.S. Government sponsored entities 10,510 (28 ) 10,482 Municipal bonds 1,626 (2 ) 1,624 $ 26,379 $ (35 ) $ 26,344 Realized gains or losses on investments are recorded in our condensed consolidated statements of operations as " Other income (expense), net ." Upon the sale of a security classified as available-for-sale, the security’s specific unrealized gain (loss) is reclassified out of accumulated other comprehensive loss into earnings based on the specific identification method. In the three months ended August 3, 2019 and July 28, 2018 , the reclassifications from accumulated other comprehensive loss to net earnings were immaterial. All available-for-sale securities are classified as current assets, as they are readily available to support our current operating needs. The contractual maturities of available-for-sale debt securities as of August 3, 2019 were as follows: Less than 12 months 1-5 Years Total Certificates of deposit $ 2,234 $ 1,230 $ 3,464 U.S. Government securities 1,000 — 1,000 U.S. Government sponsored entities 3,661 2,250 5,911 Municipal bonds 1,503 — 1,503 $ 8,398 $ 3,480 $ 11,878

Business Combination

Business Combination	3 Months Ended
	Aug. 03, 2019
Business Combinations [Abstract]
Business Combination	Note 7. Business Combinations AJT Systems, Inc. Acquisition We acquired the net assets of AJT Systems, Inc. ("AJT"), a Florida-based company, on June 21, 2018. The results of its operations have been included in our condensed consolidated financial statements since the date of acquisition. We have not made pro forma disclosures about our acquisition of AJT because the results of its operations are not material to our condensed consolidated financial statements. AJT is a developer of real-time live to air graphics rendering and video server systems for the broadcast TV industry. This acquisition will allow our organization to grow and strengthen our solution offerings to the market. This acquisition was primarily funded with cash on hand and with payments made over a three-year period.

Goodwill

Goodwill	3 Months Ended
	Aug. 03, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Note 8. Goodwill The changes in the carrying amount of goodwill related to each reportable segment for the three months ended August 3, 2019 were as follows: Live Events Commercial Transportation International Total Balance as of April 27, 2019 $ 2,276 $ 3,218 $ 49 $ 2,346 $ 7,889 Foreign currency translation 8 53 8 (18 ) 51 Balance as of August 3, 2019 $ 2,284 $ 3,271 $ 57 $ 2,328 $ 7,940 We perform an analysis of goodwill on an annual basis, and it is tested for impairment more frequently if events or changes in circumstances indicate that an asset might be impaired. We perform our annual analysis during our third quarter of each fiscal year, based on the goodwill amount as of the first business day of our third fiscal quarter. In conducting our impairment testing, we compare the fair value of each of our business units to the related carrying value of the allocated assets. We utilize the income approach based on discounted projected cash flows to estimate the fair value of each unit. The projected cash flows use many estimates including market conditions and expected market demand; our ability to grow or maintain market share and gross profit; and our expected expenditures for capital and operating expenses. Assets shared or not directly attributed to a reportable segment's activities are allocated to the reportable segment based on sales and other measures. We performed our annual impairment test on October 29, 2018 and concluded no goodwill impairment existed. We plan to complete our annual analysis as of the first business day of our third quarter of fiscal 2020, which will begin on November 4, 2019.

Selected Financial Statement Da

Selected Financial Statement Data	3 Months Ended
	Aug. 03, 2019
Selected Financial Statement Data [Abstract]
Selected Financial Statement Data	Note 9. Selected Financial Statement Data Inventories consisted of the following: August 3, April 27, Raw materials $ 36,239 $ 30,789 Work-in-process 9,291 8,239 Finished goods 39,928 39,804 $ 85,458 $ 78,832 Property and equipment, net consisted of the following: August 3, April 27, Land $ 1,754 $ 1,738 Buildings 66,731 66,403 Machinery and equipment 99,055 96,486 Office furniture and equipment 6,145 6,195 Computer software and hardware 53,611 55,460 Equipment held for rental 287 287 Demonstration equipment 7,172 7,422 Transportation equipment 7,943 7,715 242,698 241,706 Less accumulated depreciation 175,991 176,392 $ 66,707 $ 65,314

Receivables

Receivables	3 Months Ended
	Aug. 03, 2019
Receivables [Abstract]
Receivables	Note 10. Receivables We invoice customers based on a billing schedule as established in our contracts. We sometimes have the ability to file a contractor’s lien against the product installed as collateral and to file claims against surety bonds to protect our interest in receivables. Foreign sales are at times secured by irrevocable letters of credit or bank guarantees. Accounts receivable are reported net of an allowance for doubtful accounts of $2,292 and $2,208 at August 3, 2019 and April 27, 2019 , respectively. Included in accounts receivable as of August 3, 2019 and April 27, 2019 was $828 and $440 , respectively, of retainage on construction-type contracts, all of which is expected to be collected within one year. In some contracts with customers, we agreed to installment payments exceeding 12 months. The present value of these contracts and leases are recorded as a receivable as the revenue is recognized in accordance with GAAP, and profit is recognized to the extent the present value is in excess of cost. We generally retain a security interest in the equipment or in the cash flow generated by the equipment until the contract is paid. The present value of long-term contracts and lease receivables, including accrued interest and current maturities, was $6,160 and $3,514 as of August 3, 2019 and April 27, 2019 , respectively. Contract and lease receivables bearing annual interest rates of 5.0 to 9.0 percent are due in varying annual installments through 2024 . The face amount of long-term receivables was $5,501 as of August 3, 2019 and $3,271 as of April 27, 2019 .

Share Repurchase Program Share

Share Repurchase Program Share Repurchase Program	3 Months Ended
	Aug. 03, 2019
Class of Stock Disclosures [Abstract]
Treasury Stock [Text Block]	Note 11. Share Repurchase Program On June 17, 2016, our Board of Directors approved a stock repurchase program under which we may purchase up to $40,000 of the Company's outstanding shares of common stock. Under this program, we may repurchase shares from time to time in open market transactions and in privately negotiated transactions based on business, market, applicable legal requirements and other considerations. The repurchase program does not require the repurchase of a specific number of shares and may be terminated at any time. During the three months ended July 28, 2018 , we had no repurchases of shares of our outstanding common stock. During the three months ended August 3, 2019 , we repurchased 187 shares of common stock at a total cost of $1,187 . As of August 3, 2019 , we had $36,988 of remaining capacity under our current share repurchase program.

Leases Leases

Leases Leases	3 Months Ended
	Aug. 03, 2019
Leases [Abstract]
Leases	Note 12. Leases We lease facilities and various equipment to manufacture products and provide employee collaboration space and tools. These are all classified as operating leases and have initial lease terms ranging from one to five years. These operating leases do not contain material residual value guarantees or material restrictive covenants. Our lease in Sioux Falls, SD has a purchase option. We do not have any financing leases. We determine if an arrangement is a lease at inception. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Right-of-use assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, we use the incremental borrowing rate based on the information available at commencement date in determining the present value of future lease payments. The operating lease right-of-use asset includes any prepaid lease payments and initial direct costs and excludes any lease incentives and impairments. Some of our leases include options to extend the term, which is only included in the right-of-use assets and lease liability calculation when it is reasonably certain that we will exercise that option. We have lease agreements with lease and non-lease components, and we have elected to account for all asset classes as a single lease component. Our operating leases also typically require payment of real estate taxes, insurance, and common area maintenance. These components comprise the majority of our variable lease cost and are excluded from the present value of our lease obligations. In instances where they are fixed, they are included due to our election to combine lease and non-lease components. Our total variable lease costs are immaterial. Operating lease cost is recognized on a straight-line basis over the lease term, and short-term lease cost is recognized when paid. Both are recognized in cost of sales and operating expenses in the condensed consolidated statements of operations. The lease cost were as follows: Three Months Ended August 3, 2019 Operating lease cost (1) $ 852 (1) Includes short-term leases, which are immaterial. The weighted average remaining lease term and discount rate related to operating leases include: August 3, 2019 Weighted average remaining lease term 5.4 years Weighted average discount rate 3.5 % Supplemental unaudited cash flow information related to operating leases include: Three Months Ended August 3, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 816 Future minimum operating lease payments as of, and subsequent to, August 3, 2019 under ASC 842 are as follows: Operating Leases (1) Fiscal years ending 2020 $ 2,264 2021 2,649 2022 1,924 2023 1,133 2024 1,035 Thereafter 2,377 Total lease payments 11,382 Less imputed interest (1,008 ) Total lease liabilities $ 10,374 (1) Includes $3,879 to extend the term of our Sioux Falls, South Dakota manufacturing facility.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Aug. 03, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 13. Commitments and Contingencies Litigation: We are a party to legal proceedings and claims which arise during the ordinary course of business. For unresolved legal proceedings or claims, we do not believe there is a reasonable probability that any material loss will be incurred. Accordingly, no material accrual or disclosure of a potential range of loss has been made related to these matters. We do not expect the ultimate liability of these unresolved legal proceedings or claims to have a material effect on our financial position, liquidity or capital resources. Warranties: Changes in our warranty obligation for the three months ended August 3, 2019 consisted of the following: August 3, 2019 Beginning accrued warranty obligations $ 24,470 Warranties issued during the period 3,545 Settlements made during the period (2,510 ) Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations (55 ) Ending accrued warranty obligations $ 25,450 Performance guarantees: We have entered into standby letters of credit and surety bonds with financial institutions relating to the guarantee of our future performance on contracts, primarily construction-type contracts. As of August 3, 2019 , we had outstanding letters of credit and surety bonds in the amount of $17,248 and $21,758 , respectively. Performance guarantees are issued to certain customers to guarantee the operation and installation of the equipment and our ability to complete a contract. These performance guarantees have various terms but are generally one year. We enter into written agreements with our customers, and those agreements often contain indemnification provisions that require us to make the customer whole if certain acts or omissions by us cause the customer financial loss. We make efforts to negotiate reasonable caps and limitations on the recovery of such damages. As of August 3, 2019 , we were not aware of any indemnification claim from a customer. Purchase commitments: From time to time, we commit to purchase inventory, advertising, cloud-based information systems, information technology maintenance and support services, and various other products and services over periods that extend beyond one year. As of August 3, 2019 , we were obligated under the following unconditional purchase commitments: Fiscal years ending Amount 2020 $ 3,254 2021 4,485 2022 2,692 2023 1,820 2024 113 Thereafter 153 $ 12,517

Income Taxes

Income Taxes	3 Months Ended
	Aug. 03, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Note 14. Income Taxes We calculate the provision for income taxes during interim reporting periods by applying an estimate of the annual effective tax rate for the full fiscal year to “ordinary” income or loss (pre-tax income or loss excluding unusual or infrequently occurring discrete items) for the reporting period. Due to various factors and operating in multiple state and foreign jurisdictions, our effective tax rate is subject to fluctuation. We recorded an effective tax rate of 12.6 percent for the three months ended August 3, 2019 and an effective tax rate benefit of 13.1 percent for the three months ended July 28, 2018 . The changes in the effective tax rates are primarily driven by the benefit of research and development tax credits and foreign tax credits proportionate to pre-tax book income for each period. We are subject to U.S. federal income tax as well as income taxes of multiple state and foreign jurisdictions. Fiscal years 2016, 2017, 2018 and 2019 remain open to federal tax examinations, and fiscal years 2015, 2016, 2017, 2018 and 2019 remain open for various state income tax examinations. Certain subsidiaries are also subject to income tax in several foreign jurisdictions which have open tax years varying by jurisdiction beginning in fiscal 2009. In the event of any future tax assessments, we have elected to record the income taxes and any related interest and penalties as income tax expense in our condensed consolidated statement of operations. As of August 3, 2019 , undistributed earnings of our foreign subsidiaries were considered to be reinvested indefinitely. Additionally, we had $727 of unrecognized tax benefits which would reduce our effective tax rate if recognized.

Fair Value Measurement

Fair Value Measurement	3 Months Ended
	Aug. 03, 2019
Fair Value Disclosures [Abstract]
Fair Value Measurement	Note 15. Fair Value Measurement The following table sets forth by Level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis at August 3, 2019 and April 27, 2019 according to the valuation techniques we used to determine their fair values. There have been no transfers of assets or liabilities among the fair value hierarchies presented. Fair Value Measurements Level 1 Level 2 Level 3 Total Balance as of August 3, 2019 Cash and cash equivalents $ 20,762 $ — $ — $ 20,762 Restricted cash 339 — — 339 Available-for-sale securities: Certificates of deposit — 3,464 — 3,464 U.S. Government securities 1,000 — — 1,000 U.S. Government sponsored entities — 5,911 — 5,911 Municipal bonds — 1,503 — 1,503 Derivatives - asset position — 334 — 334 Derivatives - liability position — (10 ) — (10 ) Acquisition-related contingency consideration — — (1,554 ) (1,554 ) $ 22,101 $ 11,202 $ (1,554 ) $ 31,749 Balance as of April 27, 2019 Cash and cash equivalents $ 35,383 $ — $ — $ 35,383 Restricted cash 359 — — 359 Available-for-sale securities: Certificates of deposit — 3,464 — 3,464 U.S. Government securities 10,774 — — 10,774 U.S. Government sponsored entities — 10,482 — 10,482 Municipal bonds — 1,624 — 1,624 Derivatives - asset position — 91 — 91 Derivatives - liability position — (4 ) — (4 ) Acquisition-related contingency consideration — — (3,065 ) (3,065 ) $ 46,516 $ 15,657 $ (3,065 ) $ 59,108 A roll forward of the Level 3 contingent liabilities, both short- and long-term, for the three months ended August 3, 2019 is as follows: Acquisition-related contingency consideration as of April 27, 2019 $ 3,065 Additions 25 Settlements (1,591 ) Interest 18 Foreign currency translation 37 Acquisition-related contingency consideration as of August 3, 2019 $ 1,554 There have been no changes in the valuation techniques used by us to value our financial instruments since the end of fiscal 2019 . For additional information, see our Annual Report on Form 10-K for the fiscal year ended April 27, 2019 for the methods and assumptions used to estimate the fair value of each class of financial instrument.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Aug. 03, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 16. Derivative Financial Instruments We utilize derivative financial instruments to manage the economic impact of fluctuations in currency exchange rates on those transactions denominated in currencies other than our functional currency, which is the U.S. dollar. We enter into currency forward contracts to manage these economic risks. We account for all derivatives in the condensed consolidated balance sheets within accounts receivable or accounts payable measured at fair value, and changes in fair values are recognized in earnings unless specific hedge accounting criteria are met for cash flow or net investment hedges. As of August 3, 2019 and April 27, 2019 , we had not designated any of our derivative instruments as accounting hedges, and thus we recorded the changes in fair value in the " Other income (expense), net " line item in the condensed consolidated statements of operations. The foreign currency exchange contracts in aggregated notional amounts in place to exchange U.S. dollars at August 3, 2019 and April 27, 2019 were as follows: August 3, 2019 April 27, 2019 U.S. Dollars Foreign U.S. Foreign Foreign Currency Exchange Forward Contracts: U.S. Dollars/Australian Dollars 1,524 2,165 2,688 3,772 U.S. Dollars/Canadian Dollars 619 821 625 821 U.S. Dollars/British Pounds 4,747 3,639 3,547 2,680 U.S. Dollars/Swiss Franc — — 927 925 U.S. Dollars/Malaysian Ringgit 60 246 60 246 As of August 3, 2019 , there was an asset and liability of $334 and $10 , respectively, and as of April 27, 2019 , there was an asset and liability of $91 and $4 , respectively, representing the fair value of foreign currency exchange forward contracts, which were determined using Level 2 inputs from a third-party bank. As of August 3, 2019 , all contracts mature within 20 months.

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Aug. 03, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Issued Accounting Pronouncements	Recent Accounting Pronouncements There have been no material changes to our significant accounting policies and estimates as described in our Annual Report on Form 10-K for the fiscal year ended April 27, 2019 , other than described in the Accounting Standards Adopted section below. Accounting Standards Adopted In February 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-02, Leases (Topic 842) , which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of their classification. ASU 2016-02 requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases) and ASU 2018-11, Leases (Topic 842), Targeted Improvements , which provide (i) narrow amendments to clarify how to apply certain aspects of the new lease standard, (ii) entities with an additional transition method to adopt the new standard, and (iii) lessors with a practical expedient for separating components of a contract. We adopted ASU 2016-02 and its related guidance during the first quarter of fiscal 2020 for all agreements existing as of April 28, 2019. We elected the "comparatives under Accounting Standards Codification ("ASC") 840 option" as a transitional method, which allows us to initially apply the new lease requirements at the effective date. Comparative periods were not adjusted and will continue to be reported in accordance with prior lease guidance under ASC 840. We elected the package of practical expedients, which permits us not to reassess our prior conclusions about lease identification, lease classification and initial direct costs. In addition, we have elected the short-term lease recognition whereby we will not recognize operating leases related assets or liabilities for leases with a lease term of less than one year. We have also elected the practical expedient to not separate lease and non-lease components in the lease payments for all asset classes. This adoption did not have an impact on our condensed consolidated statements of operations, shareholders' equity and cash flows, and there was no adjustment to retained earnings. As of April 28, 2019, we recognized a right of use asset for operating leases of $11,101 and a current and non-current lease liability for operating leases of $2,745 and $8,356 , respectively. The right of use operating assets are included in the " Investment in affiliates and other assets " line item, the current lease liabilities are included in the " Accrued expenses " line item, and the non-current lease liabilities are included in the " Other long-term obligations " line item in our condensed consolidated balance sheet. See " Note 12. Leases " for more information. Accounting Standards Not Yet Adopted In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019 and will require adoption on a prospective basis. We are currently evaluating the effect that adopting ASU 2017-04 will have on our condensed consolidated financial statements and related disclosures. In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, and will require adoption on a modified retrospective basis. We are currently evaluating the effect that adopting ASU 2016-13 will have on our condensed consolidated financial statements and related disclosures.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	3 Months Ended
	Aug. 03, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Cash and Cash Equivalents [Table Text Block]	The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets that sum to the totals of the same amounts shown in the condensed consolidated statement of cash flows: August 3, July 28, Cash and cash equivalents $ 20,762 $ 15,915 Restricted cash 339 26 Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows $ 21,101 $ 15,941

Earnings Per Share EPS (Tables)

Earnings Per Share EPS (Tables)	3 Months Ended
	Aug. 03, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share Reconciliation	The following is a reconciliation of the net income and common share amounts used in the calculation of basic and diluted EPS for the three months ended August 3, 2019 and July 28, 2018 : Net income Shares Per share income For the three months ended August 3, 2019 Basic earnings per share $ 7,030 45,089 $ 0.16 Dilution associated with stock compensation plans — 172 — Diluted earnings per share $ 7,030 45,261 $ 0.16 For the three months ended July 28, 2018 Basic earnings per share $ 4,574 44,638 $ 0.10 Dilution associated with stock compensation plans — 193 — Diluted earnings per share $ 4,574 44,831 $ 0.10

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Aug. 03, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents our disaggregation of revenue by segments: Three Months Ended August 3, 2019 Commercial Live Events High School Park and Recreation Transportation International Total Type of performance obligation Unique configuration $ 12,965 $ 45,587 $ 6,030 $ 11,897 $ 15,678 $ 92,157 Limited configuration 27,235 7,713 23,800 6,587 9,930 75,265 Service and other 3,835 6,006 635 534 1,824 12,834 $ 44,035 $ 59,306 $ 30,465 $ 19,018 $ 27,432 $ 180,256 Timing of revenue recognition Goods/services transferred at a point in time $ 27,703 $ 9,120 $ 22,599 $ 6,697 $ 10,188 $ 76,307 Goods/services transferred over time 16,332 50,186 7,866 12,321 17,244 103,949 $ 44,035 $ 59,306 $ 30,465 $ 19,018 $ 27,432 $ 180,256 Three Months Ended July 28, 2018 Commercial Live Events High School Park and Recreation Transportation International Total Type of performance obligation Unique configuration $ 3,049 $ 38,921 $ 8,943 $ 9,618 $ 16,216 $ 76,747 Limited configuration 23,867 5,818 18,547 7,083 10,778 66,093 Service and other 3,653 4,733 630 456 1,876 11,348 $ 30,569 $ 49,472 $ 28,120 $ 17,157 $ 28,870 $ 154,188 Timing of revenue recognition Goods/services transferred at a point in time $ 24,583 $ 6,802 $ 16,998 $ 7,232 $ 11,536 $ 67,151 Goods/services transferred over time 5,986 42,670 11,122 9,925 17,334 87,037 $ 30,569 $ 49,472 $ 28,120 $ 17,157 $ 28,870 $ 154,188
Contract with Customer, Asset and Liability	The following table reflects the changes in our contract assets and liabilities: August 3, 2019 April 27, 2019 Dollar Change Percent Change Contract assets $ 42,809 $ 33,704 $ 9,105 27.0 % Contract liabilities - current 53,421 47,178 6,243 13.2 Contract liabilities - noncurrent 10,140 10,053 87 0.9

Segment Disclosure (Tables)

Segment Disclosure (Tables)	3 Months Ended
	Aug. 03, 2019
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following table sets forth certain financial information for each of our five reporting segments for the periods indicated: Three Months Ended August 3, July 28, Net sales: Commercial $ 44,035 $ 30,569 Live Events 59,306 49,472 High School Park and Recreation 30,465 28,120 Transportation 19,018 17,157 International 27,432 28,870 180,256 154,188 Gross profit: Commercial 9,218 6,894 Live Events 12,737 10,233 High School Park and Recreation 10,187 9,502 Transportation 6,754 5,451 International 6,609 6,167 45,505 38,247 Contribution margin: (1) Commercial 4,084 2,474 Live Events 8,872 6,985 High School Park and Recreation 6,592 6,552 Transportation 5,452 4,295 International 2,208 1,563 27,208 21,869 Non-allocated operating expenses: General and administrative 9,093 8,537 Product design and development 10,500 9,292 Operating income 7,615 4,040 Nonoperating income (expense): Interest income 269 197 Interest expense (35 ) (39 ) Other income (expense), net 193 (154 ) Income before income taxes 8,042 4,044 Income tax expense (benefit) 1,012 (530 ) Net income $ 7,030 $ 4,574 Depreciation and amortization: Commercial $ 974 $ 1,178 Live Events 1,398 1,172 High School Park and Recreation 512 443 Transportation 264 274 International 524 700 Unallocated corporate depreciation 711 721 $ 4,383 $ 4,488 (1) Contribution margin consists of gross profit less selling expense.
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	The following table presents information about net sales and property and equipment, net of accumulated depreciation, in the United States and elsewhere: Three Months Ended August 3, July 28, Net sales: United States $ 149,460 $ 121,325 Outside United States 30,796 32,863 $ 180,256 $ 154,188 August 3, April 27, Property and equipment, net of accumulated depreciation: United States $ 59,446 $ 59,192 Outside United States 7,261 6,122 $ 66,707 $ 65,314

Marketable Securities (Tables)

Marketable Securities (Tables)	3 Months Ended
	Aug. 03, 2019
Marketable Securities [Abstract]
Available-for-sale Securities	As of August 3, 2019 and April 27, 2019 , our available-for-sale securities consisted of the following: Amortized Cost Unrealized Losses Fair Value Balance as of August 3, 2019 Certificates of deposit $ 3,464 $ — $ 3,464 U.S. Government securities 1,000 — 1,000 U.S. Government sponsored entities 5,913 (2 ) 5,911 Municipal bonds 1,503 — 1,503 $ 11,880 $ (2 ) $ 11,878 Balance as of April 27, 2019 Certificates of deposit $ 3,464 $ — $ 3,464 U.S. Government securities 10,779 (5 ) 10,774 U.S. Government sponsored entities 10,510 (28 ) 10,482 Municipal bonds 1,626 (2 ) 1,624 $ 26,379 $ (35 ) $ 26,344
Investments Classified by Contractual Maturity Date	All available-for-sale securities are classified as current assets, as they are readily available to support our current operating needs. The contractual maturities of available-for-sale debt securities as of August 3, 2019 were as follows: Less than 12 months 1-5 Years Total Certificates of deposit $ 2,234 $ 1,230 $ 3,464 U.S. Government securities 1,000 — 1,000 U.S. Government sponsored entities 3,661 2,250 5,911 Municipal bonds 1,503 — 1,503 $ 8,398 $ 3,480 $ 11,878

Goodwill (Tables)

Goodwill (Tables)	3 Months Ended
	Aug. 03, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The changes in the carrying amount of goodwill related to each reportable segment for the three months ended August 3, 2019 were as follows: Live Events Commercial Transportation International Total Balance as of April 27, 2019 $ 2,276 $ 3,218 $ 49 $ 2,346 $ 7,889 Foreign currency translation 8 53 8 (18 ) 51 Balance as of August 3, 2019 $ 2,284 $ 3,271 $ 57 $ 2,328 $ 7,940

Selected Financial Statement _2

Selected Financial Statement Data (Tables)	3 Months Ended
	Aug. 03, 2019
Selected Financial Statement Data [Abstract]
Schedule of Inventory	Inventories consisted of the following: August 3, April 27, Raw materials $ 36,239 $ 30,789 Work-in-process 9,291 8,239 Finished goods 39,928 39,804 $ 85,458 $ 78,832
Schedule of Property and Equipment	Property and equipment, net consisted of the following: August 3, April 27, Land $ 1,754 $ 1,738 Buildings 66,731 66,403 Machinery and equipment 99,055 96,486 Office furniture and equipment 6,145 6,195 Computer software and hardware 53,611 55,460 Equipment held for rental 287 287 Demonstration equipment 7,172 7,422 Transportation equipment 7,943 7,715 242,698 241,706 Less accumulated depreciation 175,991 176,392 $ 66,707 $ 65,314

Leases (Tables)

Leases (Tables)	3 Months Ended
	Aug. 03, 2019
Leases [Abstract]
Components of Lease Cost	The lease cost were as follows: Three Months Ended August 3, 2019 Operating lease cost (1) $ 852 (1) Includes short-term leases, which are immaterial.
Supplemental Cash Flow Information	The weighted average remaining lease term and discount rate related to operating leases include: August 3, 2019 Weighted average remaining lease term 5.4 years Weighted average discount rate 3.5 % Supplemental unaudited cash flow information related to operating leases include: Three Months Ended August 3, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 816
Lease Liability Schedule	Future minimum operating lease payments as of, and subsequent to, August 3, 2019 under ASC 842 are as follows: Operating Leases (1) Fiscal years ending 2020 $ 2,264 2021 2,649 2022 1,924 2023 1,133 2024 1,035 Thereafter 2,377 Total lease payments 11,382 Less imputed interest (1,008 ) Total lease liabilities $ 10,374 (1) Includes $3,879 to extend the term of our Sioux Falls, South Dakota manufacturing facility.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Aug. 03, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability	Changes in our warranty obligation for the three months ended August 3, 2019 consisted of the following: August 3, 2019 Beginning accrued warranty obligations $ 24,470 Warranties issued during the period 3,545 Settlements made during the period (2,510 ) Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations (55 ) Ending accrued warranty obligations $ 25,450
Long-term Purchase Commitment	As of August 3, 2019 , we were obligated under the following unconditional purchase commitments: Fiscal years ending Amount 2020 $ 3,254 2021 4,485 2022 2,692 2023 1,820 2024 113 Thereafter 153 $ 12,517

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	3 Months Ended
	Aug. 03, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value	The following table sets forth by Level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis at August 3, 2019 and April 27, 2019 according to the valuation techniques we used to determine their fair values. There have been no transfers of assets or liabilities among the fair value hierarchies presented. Fair Value Measurements Level 1 Level 2 Level 3 Total Balance as of August 3, 2019 Cash and cash equivalents $ 20,762 $ — $ — $ 20,762 Restricted cash 339 — — 339 Available-for-sale securities: Certificates of deposit — 3,464 — 3,464 U.S. Government securities 1,000 — — 1,000 U.S. Government sponsored entities — 5,911 — 5,911 Municipal bonds — 1,503 — 1,503 Derivatives - asset position — 334 — 334 Derivatives - liability position — (10 ) — (10 ) Acquisition-related contingency consideration — — (1,554 ) (1,554 ) $ 22,101 $ 11,202 $ (1,554 ) $ 31,749 Balance as of April 27, 2019 Cash and cash equivalents $ 35,383 $ — $ — $ 35,383 Restricted cash 359 — — 359 Available-for-sale securities: Certificates of deposit — 3,464 — 3,464 U.S. Government securities 10,774 — — 10,774 U.S. Government sponsored entities — 10,482 — 10,482 Municipal bonds — 1,624 — 1,624 Derivatives - asset position — 91 — 91 Derivatives - liability position — (4 ) — (4 ) Acquisition-related contingency consideration — — (3,065 ) (3,065 ) $ 46,516 $ 15,657 $ (3,065 ) $ 59,108
Rollforward of Level 3 Contingent Consideration Liabilities	A roll forward of the Level 3 contingent liabilities, both short- and long-term, for the three months ended August 3, 2019 is as follows: Acquisition-related contingency consideration as of April 27, 2019 $ 3,065 Additions 25 Settlements (1,591 ) Interest 18 Foreign currency translation 37 Acquisition-related contingency consideration as of August 3, 2019 $ 1,554

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Aug. 03, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The foreign currency exchange contracts in aggregated notional amounts in place to exchange U.S. dollars at August 3, 2019 and April 27, 2019 were as follows: August 3, 2019 April 27, 2019 U.S. Dollars Foreign U.S. Foreign Foreign Currency Exchange Forward Contracts: U.S. Dollars/Australian Dollars 1,524 2,165 2,688 3,772 U.S. Dollars/Canadian Dollars 619 821 625 821 U.S. Dollars/British Pounds 4,747 3,639 3,547 2,680 U.S. Dollars/Swiss Franc — — 927 925 U.S. Dollars/Malaysian Ringgit 60 246 60 246

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Apr. 28, 2019	Apr. 27, 2019	Jul. 28, 2018	Apr. 28, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 20,762		$ 35,383	$ 15,915
Restricted cash	339		359	26
Total cash, cash equivalents, and restricted cash shown in the condensed consolidated statement of cash flows	$ 21,101		$ 35,742	$ 15,941	$ 29,755
Operating Lease, Right-of-Use Asset		$ 11,101
Operating Lease, Liability, Current		2,745
Operating Lease, Liability, Noncurrent		$ 8,356

Investments in Affiliates (Deta

Investments in Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018	Apr. 27, 2019
Equity and Cost Method Investments [Abstract]
Equity Method Investments	$ 3,538		$ 3,657
Equity in loss of affiliate	(118)	$ (134)
Cost Method Investments	$ 42		$ 42

Earnings Per Share EPS - Reconc

Earnings Per Share EPS - Reconciliation of Income (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Net income
Basic earnings per share	$ 7,030	$ 4,574
Dilution associated with stock compensation plans	0	0
Diluted earnings per share	$ 7,030	$ 4,574
Shares
Basic earnings per share (in shares)	45,089	44,638
Dilution associated with stock compensation plans (in shares)	172	193
Diluted earnings per share (in shares)	45,261	44,831
Per share income
Basic earnings per share (in dollars per share)	$ 0.16	$ 0.10
Dilution associated with stock compensation plans (in dollars per share)	0	0
Diluted earnings per share (in dollars per share)	$ 0.16	$ 0.10

Earnings Per Share EPS - Antidi

Earnings Per Share EPS - Antidilutive Shares Excluded (Details) - Stock Options - $ / shares shares in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	2,197	1,798
Antidilutive securities excluded from computation of earnings per share, weighted average exercise price (dollars per share)	$ 10.03	$ 10.46

Revenue Recognition Disaggregat

Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 180,256	$ 154,188
Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	76,307	67,151
Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	103,949	87,037
Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	44,035	30,569
Commercial | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	27,703	24,583
Commercial | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	16,332	5,986
Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	59,306	49,472
Live Events | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	9,120	6,802
Live Events | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	50,186	42,670
High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	30,465	28,120
High School Park and Recreation | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	22,599	16,998
High School Park and Recreation | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	7,866	11,122
Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	19,018	17,157
Transportation | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,697	7,232
Transportation | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	12,321	9,925
International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	27,432	28,870
International | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	10,188	11,536
International | Transferred over Time
Disaggregation of Revenue [Line Items]
Disaggregated revenue	17,244	17,334
Unique Configuration
Disaggregation of Revenue [Line Items]
Disaggregated revenue	92,157	76,747
Unique Configuration | Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	12,965	3,049
Unique Configuration | Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	45,587	38,921
Unique Configuration | High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,030	8,943
Unique Configuration | Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	11,897	9,618
Unique Configuration | International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	15,678	16,216
Limited Configuration
Disaggregation of Revenue [Line Items]
Disaggregated revenue	75,265	66,093
Limited Configuration | Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	27,235	23,867
Limited Configuration | Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	7,713	5,818
Limited Configuration | High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	23,800	18,547
Limited Configuration | Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,587	7,083
Limited Configuration | International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	9,930	10,778
Service and Other
Disaggregation of Revenue [Line Items]
Disaggregated revenue	12,834	11,348
Service and Other | Commercial
Disaggregation of Revenue [Line Items]
Disaggregated revenue	3,835	3,653
Service and Other | Live Events
Disaggregation of Revenue [Line Items]
Disaggregated revenue	6,006	4,733
Service and Other | High School Park and Recreation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	635	630
Service and Other | Transportation
Disaggregation of Revenue [Line Items]
Disaggregated revenue	534	456
Service and Other | International
Disaggregation of Revenue [Line Items]
Disaggregated revenue	$ 1,824	$ 1,876

Revenue Recognition Contract wi

Revenue Recognition Contract with Customer, Asset and Liability (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)	Apr. 27, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Contract assets	$ 42,809	$ 33,704
Contract liabilities - current	53,421	47,178
Contract liabilities - noncurrent	10,140	$ 10,053
Dollar Change
Contract assets	9,105
Contract liabilities - current	6,243
Contract liabilities - noncurrent	$ 87
Change in Contract with Customer, Asset and Liability, Percentage [Abstract]
Contract assets percent change	27.00%
Contract liabilities, current, percent change	13.20%
Contract liabilities, noncurrent, percent change	0.90%
Number of Loss on Contracts	4	6
Provision for Loss on Contracts	$ 531	$ 2,353
Revenue recognized related to contract liability	$ 31,259

Revenue Recognition Remaining P

Revenue Recognition Remaining Performance Obligations (Details) $ in Thousands	Aug. 03, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 263,406
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, service agreements	56,416
Remaining performance obligation, products	206,990
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-28
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 226,999
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-27
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation recognition period	12 months

Segment Disclosure - Net Income

Segment Disclosure - Net Income by Segment (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)segment	Jul. 28, 2018USD ($)
Segment Reporting Information
Number of business units | segment	5
Net sales	$ 180,256	$ 154,188
Gross profit	45,505	38,247
Non-allocated operating expenses:
General and administrative	9,093	8,537
Product design and development	10,500	9,292
Operating income	7,615	4,040
Nonoperating income (expense):
Interest income	269	197
Interest expense	(35)	(39)
Other income (expense), net	193	(154)
Income before income taxes	8,042	4,044
Income tax expense (benefit)	1,012	(530)
Net income	7,030	4,574
Operating Segments
Segment Reporting Information
Net sales	180,256	154,188
Gross profit	45,505	38,247
Contribution Margin	27,208	21,869
Depreciation and amortization
Depreciation, amortization, and impairment	4,383	4,488
Operating Segments | Commercial
Segment Reporting Information
Net sales	44,035	30,569
Gross profit	9,218	6,894
Contribution Margin	4,084	2,474
Depreciation and amortization
Depreciation, amortization, and impairment	974	1,178
Operating Segments | Live Events
Segment Reporting Information
Net sales	59,306	49,472
Gross profit	12,737	10,233
Contribution Margin	8,872	6,985
Depreciation and amortization
Depreciation, amortization, and impairment	1,398	1,172
Operating Segments | High School Park and Recreation
Segment Reporting Information
Net sales	30,465	28,120
Gross profit	10,187	9,502
Contribution Margin	6,592	6,552
Depreciation and amortization
Depreciation, amortization, and impairment	512	443
Operating Segments | Transportation
Segment Reporting Information
Net sales	19,018	17,157
Gross profit	6,754	5,451
Contribution Margin	5,452	4,295
Depreciation and amortization
Depreciation, amortization, and impairment	264	274
Operating Segments | International
Segment Reporting Information
Net sales	27,432	28,870
Gross profit	6,609	6,167
Contribution Margin	2,208	1,563
Depreciation and amortization
Depreciation, amortization, and impairment	524	700
Operating Segments | Unallocated
Depreciation and amortization
Depreciation, amortization, and impairment	$ 711	$ 721

Segment Disclosure - Net Sales

Segment Disclosure - Net Sales and Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018	Apr. 27, 2019
Net sales:
Net sales	$ 180,256	$ 154,188
Long-lived assets:
Long-lived assets	66,707		$ 65,314
United States
Net sales:
Net sales	149,460	121,325
Long-lived assets:
Long-lived assets	59,446		59,192
Outside United States
Net sales:
Net sales	30,796	$ 32,863
Long-lived assets:
Long-lived assets	$ 7,261		$ 6,122

Marketable Securities - Availab

Marketable Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Apr. 27, 2019
Schedule of Available-for-sale Securities
Amortized Cost	$ 11,880	$ 26,379
Unrealized Losses	(2)	(35)
Fair Value	11,878	26,344
Certificates of deposit
Schedule of Available-for-sale Securities
Amortized Cost	3,464	3,464
Unrealized Losses	0	0
Fair Value	3,464	3,464
U.S. Government securities
Schedule of Available-for-sale Securities
Amortized Cost	1,000	10,779
Unrealized Losses	0	(5)
Fair Value	1,000	10,774
U.S. Government sponsored entities
Schedule of Available-for-sale Securities
Amortized Cost	5,913	10,510
Unrealized Losses	(2)	(28)
Fair Value	5,911	10,482
Municipal bonds
Schedule of Available-for-sale Securities
Amortized Cost	1,503	1,626
Unrealized Losses	0	(2)
Fair Value	$ 1,503	$ 1,624

Marketable Securities - Avail_2

Marketable Securities - Available-for-sale by Maturity Date (Details) $ in Thousands	Aug. 03, 2019USD ($)
Schedule of Available-for-sale Securities
Less than 12 months	$ 8,398
Greater than 12 months	3,480
Total	11,878
Certificates of deposit
Schedule of Available-for-sale Securities
Less than 12 months	2,234
Greater than 12 months	1,230
Total	3,464
U.S. Government securities
Schedule of Available-for-sale Securities
Less than 12 months	1,000
Greater than 12 months	0
Total	1,000
U.S. Government sponsored entities
Schedule of Available-for-sale Securities
Less than 12 months	3,661
Greater than 12 months	2,250
Total	5,911
Municipal bonds
Schedule of Available-for-sale Securities
Less than 12 months	1,503
Greater than 12 months	0
Total	$ 1,503

Goodwill (Details)

Goodwill (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)
Goodwill
Balance as of April 27, 2019	$ 7,889
Foreign currency translation	51
Balance as of August 3, 2019	7,940
Live Events
Goodwill
Balance as of April 27, 2019	2,276
Foreign currency translation	8
Balance as of August 3, 2019	2,284
Commercial
Goodwill
Balance as of April 27, 2019	3,218
Foreign currency translation	53
Balance as of August 3, 2019	3,271
Transportation
Goodwill
Balance as of April 27, 2019	49
Foreign currency translation	8
Balance as of August 3, 2019	57
International
Goodwill
Balance as of April 27, 2019	2,346
Foreign currency translation	(18)
Balance as of August 3, 2019	$ 2,328

Selected Financial Statement _3

Selected Financial Statement Data Inventory (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Apr. 27, 2019
Selected Financial Statement Data [Abstract]
Raw materials	$ 36,239	$ 30,789
Work-in-process	9,291	8,239
Finished goods	39,928	39,804
Inventories	$ 85,458	$ 78,832

Selected Financial Statement _4

Selected Financial Statement Data Property and Equipment (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Apr. 27, 2019
Property, Plant and Equipment [Line Items]
Land	$ 1,754	$ 1,738
Buildings	66,731	66,403
Machinery and equipment	99,055	96,486
Office furniture and equipment	6,145	6,195
Computer software and hardware	53,611	55,460
Equipment held for rental	287	287
Demonstration equipment	7,172	7,422
Transportation equipment	7,943	7,715
Property, Plant and Equipment, Gross	242,698	241,706
Less accumulated depreciation	175,991	176,392
Property and equipment, net	$ 66,707	$ 65,314

Receivables (Details)

Receivables (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Apr. 27, 2019
Receivables
Allowance for doubtful accounts	$ 2,292	$ 2,208
Retainage on construction-type contracts, expected to be collected in one year	828	440
Financing Receivable
Receivables
Long-term contracts and lease receivables, present value	6,160	3,514
Long-term contracts and lease receivables, face amount	$ 5,501	$ 3,271
Financing Receivable | Minimum
Receivables
Contract and lease receivables annual interest rates	5.00%
Financing Receivable | Maximum
Receivables
Contract and lease receivables annual interest rates	9.00%

Share Repurchase Program (Detai

Share Repurchase Program (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jun. 17, 2016
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount		$ 40,000
Stock Repurchased During Period, Shares	187
Stock Repurchased During Period, Value	$ 1,187
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 36,988

Leases (Details)

Leases (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 852
Weighted average remaining lease term (years)	5 years 4 months 30 days
Weighted average discount rate (percent)	3.50%
Operating lease payments	$ 816
Minimum
Lessee, Lease, Description [Line Items]
Term of lease (years)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of lease (years)	5 years

Leases - Lease Liability Maturi

Leases - Lease Liability Maturity Schedule (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)
Leases [Abstract]
2020	$ 2,264
2021	2,649
2022	1,924
2023	1,133
2024	1,035
Thereafter	2,377
Total lease payments	11,382
Less imputed interest	(1,008)
Total lease liabilities	10,374
Lessee, Operating Lease, Option To Extend, Payment	$ 3,879

Commitments and Contingencies -

Commitments and Contingencies - Guarantees and Warranties (Details) $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)
Movement in Standard Product Warranty Accrual
Beginning accrued warranty obligations	$ 24,470
Warranties issued during the period	3,545
Settlements made during the period	(2,510)
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations	(55)
Ending accrued warranty obligations	25,450
Performance guarantees | Letter of credit and bank guarantees agreements
Guarantees:
Performance guarantees outstanding	17,248
Performance guarantees | Surety bonds
Guarantees:
Performance guarantees outstanding	$ 21,758

Commitments and Contingencies_2

Commitments and Contingencies - Purchase Commitments (Details) $ in Thousands	Aug. 03, 2019USD ($)
Purchase Obligation, Fiscal Year Maturity
2020	$ 3,254
2021	4,485
2022	2,692
2023	1,820
2024	113
Thereafter	153
Total	$ 12,517

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 03, 2019	Jul. 28, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	12.60%	(13.10%)
Unrecognized tax benefits that would affect our effective tax rate if recognized	$ 727

Fair Value Measurement (Details

Fair Value Measurement (Details) - USD ($) $ in Thousands	Aug. 03, 2019	Apr. 27, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	$ 11,878	$ 26,344
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	3,464	3,464
U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,000	10,774
U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	5,911	10,482
Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,503	1,624
Reported Value Measurement [Member] | Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	20,762	35,383
Restricted cash	339	359
Derivatives - asset position	334	91
Derivatives - liability position	(10)	(4)
Acquisition-related contingency consideration	(1,554)	(3,065)
Assets (Liabilities), net	31,749	59,108
Reported Value Measurement [Member] | Recurring Basis | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	3,464	3,464
Reported Value Measurement [Member] | Recurring Basis | U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,000	10,774
Reported Value Measurement [Member] | Recurring Basis | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	5,911	10,482
Reported Value Measurement [Member] | Recurring Basis | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,503	1,624
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	20,762	35,383
Restricted cash	339	359
Derivatives - asset position	0	0
Derivatives - liability position	0	0
Acquisition-related contingency consideration	0	0
Assets (Liabilities), net	22,101	46,516
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 1 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 1 | U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,000	10,774
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 1 | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 1 | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Restricted cash	0	0
Derivatives - asset position	334	91
Derivatives - liability position	(10)	(4)
Acquisition-related contingency consideration	0	0
Assets (Liabilities), net	11,202	15,657
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	3,464	3,464
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2 | U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2 | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	5,911	10,482
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2 | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,503	1,624
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Restricted cash	0	0
Derivatives - asset position	0	0
Derivatives - liability position	0	0
Acquisition-related contingency consideration	(1,554)	(3,065)
Assets (Liabilities), net	(1,554)	(3,065)
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 3 | Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 3 | U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 3 | U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 3 | Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	$ 0	$ 0

Fair Value Measurement - Roll F

Fair Value Measurement - Roll Forward of the Level 3 Contingent Consideration Liability (Details) - Estimate of Fair Value Measurement [Member] - Level 3 - Recurring Basis - Contingent Consideration Liability $ in Thousands	3 Months Ended
	Aug. 03, 2019USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingency consideration as of April 27, 2019	$ 3,065
Additions	25
Settlements	(1,591)
Interest	18
Foreign currency translation	37
Acquisition-related contingency consideration as of August 3, 2019	$ 1,554

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) £ in Thousands, SFr in Thousands, RM in Thousands, $ in Thousands, $ in Thousands, $ in Thousands

3 Months Ended

Aug. 03, 2019CAD ($)

Aug. 03, 2019AUD ($)

Aug. 03, 2019MYR (RM)

Aug. 03, 2019USD ($)

Aug. 03, 2019CHF (SFr)

Aug. 03, 2019GBP (£)

Apr. 27, 2019CAD ($)

Apr. 27, 2019AUD ($)

Apr. 27, 2019MYR (RM)

Apr. 27, 2019USD ($)

Apr. 27, 2019CHF (SFr)

Apr. 27, 2019GBP (£)

Derivative

Derivative term (months)

20 months

U.S. Dollars/Australian Dollars | Not Designated as Hedging Instrument

Derivative

Foreign currency exchange forward contracts

$ 2,165

$ 1,524

$ 3,772

$ 2,688

U.S. Dollars/Canadian Dollars | Not Designated as Hedging Instrument

Derivative

Foreign currency exchange forward contracts

$ 821

619

$ 821

625

U.S. Dollars/British Pounds | Not Designated as Hedging Instrument

Derivative

Foreign currency exchange forward contracts

4,747

£ 3,639

3,547

£ 2,680

U.S. Dollars/Swiss Franc | Not Designated as Hedging Instrument

Derivative

Foreign currency exchange forward contracts

0

SFr 0

927

SFr 925

U.S. Dollars/Malaysian Ringgit | Not Designated as Hedging Instrument

Derivative

Foreign currency exchange forward contracts

RM 246

60

RM 246

60

Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2

Derivative

Derivatives - currency forward contract, asset

334

91

Derivatives - currency forward contracts, liability

$ (10)

$ (4)