Blue Bird (BLBD) 10-Q 10 Aug 22 2022 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Jul. 02, 2022	Aug. 08, 2022
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jul. 02, 2022
Document Transition Report	false
Entity File Number	001-36267
Entity Registrant Name	BLUE BIRD CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-3891989
Entity Address, Address Line One	3920 Arkwright Road
Entity Address, Address Line Two	2nd Floor
Entity Address, City or Town	Macon
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	31210
City Area Code	478
Local Phone Number	822-2801
Title of 12(b) Security	Common stock, $0.0001 par value
Trading Symbol	BLBD
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		32,024,911
Entity Central Index Key	0001589526
Current Fiscal Year End Date	--10-01
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 02, 2022	Oct. 02, 2021
Current assets
Cash and cash equivalents	$ 26,509	$ 11,709
Accounts receivable, net	13,004	9,967
Inventories	216,725	125,206
Other current assets	9,901	9,191
Total current assets	266,139	156,073
Property, plant and equipment, net	102,124	105,482
Goodwill	18,825	18,825
Intangible assets, net	47,936	49,443
Equity investment in affiliate	11,312	14,817
Deferred tax assets	10,706	4,413
Finance lease right-of-use assets	4,363	5,486
Other assets	1,765	1,481
Total assets	463,170	356,020
Current liabilities
Accounts payable	129,911	72,270
Warranty	6,637	7,385
Accrued expenses	18,472	12,267
Deferred warranty income	7,152	7,832
Finance lease obligations	1,366	1,327
Other current liabilities	4,626	8,851
Current portion of long-term debt	18,563	14,850
Total current liabilities	186,727	124,782
Long-term liabilities
Revolving credit facility	60,000	45,000
Long-term debt	135,035	149,573
Warranty	9,507	11,165
Deferred warranty income	10,986	12,312
Deferred tax liabilities	3,883	3,673
Finance lease obligations	3,506	4,538
Other liabilities	11,880	14,882
Pension	19,659	22,751
Total long-term liabilities	254,456	263,894
Guarantees, commitments and contingencies (Note 6)
Stockholders' equity (deficit)
Preferred stock, $0.0001 par value, 10,000,000 shares authorized, 0 shares outstanding at July 2, 2022 and October 2, 2021	0	0
Common stock, $0.0001 par value, 100,000,000 shares authorized, 31,990,860 and 27,205,269 shares outstanding at July 2, 2022 and October 2, 2021, respectively	3	3
Additional paid-in capital	172,814	96,170
Accumulated deficit	(56,417)	(33,753)
Accumulated other comprehensive loss	(44,131)	(44,794)
Treasury stock, at cost, 1,782,568 shares at July 2, 2022 and October 2, 2021	(50,282)	(50,282)
Total stockholders' equity (deficit)	21,987	(32,656)
Total liabilities and stockholders' equity (deficit)	$ 463,170	$ 356,020

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jul. 02, 2022	Oct. 02, 2021
Statement of Financial Position [Abstract]
Preferred Stock, Par Value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value (in dollars per share)	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares Outstanding	31,990,860	27,205,269
Treasury Stock, Common, Shares	1,782,568	1,782,568

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Income Statement [Abstract]
Net sales	$ 206,083	$ 196,659	$ 542,965	$ 491,791
Cost of goods sold	184,490	170,500	502,018	432,671
Gross profit	21,593	26,159	40,947	59,120
Operating expenses
Selling, general and administrative expenses	20,505	18,073	58,596	50,124
Operating profit (loss)	1,088	8,086	(17,649)	8,996
Interest expense	(3,908)	(2,805)	(9,481)	(7,069)
Interest income	0	0	0	1
Other income, net	735	426	2,215	1,491
Loss on debt modification	0	0	(561)	(598)
(Loss) income before income taxes	(2,085)	5,707	(25,476)	2,821
Income tax (expense) benefit	(2,860)	(1,892)	6,317	(888)
Equity in net (loss) income of non-consolidated affiliate	(1,490)	517	(3,505)	166
Net (loss) income	$ (6,435)	$ 4,332	$ (22,664)	$ 2,099
(Loss) earnings per share:
Basic weighted average shares outstanding	31,990,860	27,172,162	30,687,406	27,116,915
Diluted weighted average shares outstanding	31,990,860	27,428,877	30,687,406	27,337,360
Basic earnings per share (in dollars per share)	$ (0.20)	$ 0.16	$ (0.74)	$ 0.08
Diluted earnings per share (in dollars per share)	$ (0.20)	$ 0.16	$ (0.74)	$ 0.08

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (6,435)	$ 4,332	$ (22,664)	$ 2,099
Other comprehensive income, net of tax:
Net change in defined benefit pension plan	221	354	663	1,061
Total other comprehensive income	221	354	663	1,061
Comprehensive (loss) income	$ (6,214)	$ 4,686	$ (22,001)	$ 3,160

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021
Cash flows from operating activities
Net (loss) income	$ (22,664)	$ 2,099
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	10,089	10,145
Non-cash interest expense	3,084	2,219
Share-based compensation	3,153	1,923
Equity in net loss (income) of non-consolidated affiliate	3,505	(166)
Loss (gain) on disposal of fixed assets	12	(681)
Impairment of fixed assets	1,354	0
Deferred taxes	(6,293)	350
Amortization of deferred actuarial pension losses	872	1,397
Loss on debt modification	561	598
Changes in assets and liabilities:
Accounts receivable	(3,037)	(2,828)
Inventories	(91,519)	(77,017)
Other assets	80	1,682
Accounts payable	56,280	55,150
Accrued expenses, pension and other liabilities	(9,928)	(9,109)
Total adjustments	(31,787)	(16,337)
Total cash used in operating activities	(54,451)	(14,238)
Cash flows from investing activities
Cash paid for fixed assets	(4,748)	(10,304)
Proceeds from sale of fixed assets	0	901
Total cash used in investing activities	(4,748)	(9,403)
Cash flows from financing activities
Revolving credit facility borrowings	15,000	0
Principal payments of senior term loan borrowings	(11,138)	(7,425)
Principal payments of finance lease borrowings	(993)	(1,147)
Cash paid for debt costs	(2,468)	(2,476)
Proceeds from Private Placement (Note 11)	75,000	0
Cash paid for stock issuance costs	(202)	0
Cash paid for repurchases of common stock in connection with employee stock award exercises	(1,503)	(518)
Cash received from employee stock option exercises	303	1,923
Total cash provided by (used in) financing activities	73,999	(9,643)
Change in cash and cash equivalents	14,800	(33,284)
Cash and cash equivalents, beginning of period	11,709	44,507
Cash and cash equivalents, end of period	26,509	11,223
Supplemental disclosures of cash flow information
Interest paid, net of interest received	10,408	8,855
Income tax paid, net of tax refunds	48	52
Non-cash investing and financing activities:
Changes in accounts payable for capital additions to property, plant and equipment	1,718	400
Right-of-use assets obtained in exchange for operating lease obligations	$ 0	$ 107

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Deficit Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In-Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Treasury Stock
Beginning Balance (in shares) at Oct. 03, 2020		27,048,404				1,782,568
Beginning Balance at Oct. 03, 2020	$ (53,230)	$ 3	$ 88,910	$ (58,397)	$ (33,464)	$ (50,282)
Restricted stock activity (in shares)		36,404
Restricted stock activity	(517)		(517)
Stock option activity (in shares)		119,627
Stock option activity	1,922		1,922
Share-based compensation expense	1,854		1,854
Net (loss) income	2,099				2,099
Other comprehensive income, net of tax	1,061			1,061
Ending Balance (in shares) at Jul. 03, 2021		27,204,435				1,782,568
Ending Balance at Jul. 03, 2021	(46,811)	$ 3	92,169	(57,336)	(31,365)	$ (50,282)
Beginning Balance (in shares) at Apr. 03, 2021		27,153,872				1,782,568
Beginning Balance at Apr. 03, 2021	(52,588)	$ 3	91,078	(57,690)	(35,697)	$ (50,282)
Stock option activity (in shares)		50,563
Stock option activity	794		794
Share-based compensation expense	297		297
Net (loss) income	4,332				4,332
Other comprehensive income, net of tax	354
Other comprehensive income, net of tax	354			354
Ending Balance (in shares) at Jul. 03, 2021		27,204,435				1,782,568
Ending Balance at Jul. 03, 2021	(46,811)	$ 3	92,169	(57,336)	(31,365)	$ (50,282)
Beginning Balance (in shares) at Oct. 02, 2021		27,205,269				1,782,568
Beginning Balance at Oct. 02, 2021	(32,656)	$ 3	96,170	(44,794)	(33,753)	$ (50,282)
Private Placement (Note 11) (in shares)		4,687,500
Private Placement (Note 11)	74,798		74,798
Restricted stock activity (in shares)		82,505
Restricted stock activity	(1,484)		(1,484)
Stock option activity (in shares)		15,586
Stock option activity	284		284
Share-based compensation expense	3,046		3,046
Net (loss) income	(22,664)				(22,664)
Other comprehensive income, net of tax	663			663
Ending Balance (in shares) at Jul. 02, 2022		31,990,860				1,782,568
Ending Balance at Jul. 02, 2022	21,987	$ 3	172,814	(44,131)	(56,417)	$ (50,282)
Beginning Balance (in shares) at Apr. 02, 2022		31,990,860				1,782,568
Beginning Balance at Apr. 02, 2022	27,578	$ 3	172,191	(44,352)	(49,982)	$ (50,282)
Share-based compensation expense	623		623
Net (loss) income	(6,435)				(6,435)
Other comprehensive income, net of tax	221			221
Ending Balance (in shares) at Jul. 02, 2022		31,990,860				1,782,568
Ending Balance at Jul. 02, 2022	$ 21,987	$ 3	$ 172,814	$ (44,131)	$ (56,417)	$ (50,282)

Nature of Business and Basis of

Nature of Business and Basis of Presentation	9 Months Ended
	Jul. 02, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business and Basis of Presentation	1. Nature of Business and Basis of Presentation Nature of Business Blue Bird Body Company ("BBBC"), a wholly-owned subsidiary of Blue Bird Corporation, was incorporated in 1958 and has manufactured, assembled and sold school buses to a variety of municipal, federal and commercial customers since 1927. The majority of BBBC’s sales are made to an independent dealer network, which in turn sells buses to ultimate end users. References in these notes to condensed consolidated financial statements to “Blue Bird,” the “Company,” “we,” “our,” or “us” relate to Blue Bird Corporation and its wholly-owned subsidiaries, unless the context specifically indicates otherwise. We are headquartered in Macon, Georgia. Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company transactions and accounts have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and Article 8 of Regulation S-X. The Company’s fiscal year ends on the Saturday closest to September 30 with its quarters consisting of thirteen weeks in most years. The fiscal years ending October 1, 2022 ("fiscal 2022") and ended October 2, 2021 ("fiscal 2021") consist or consisted of 52 weeks. The third quarters of fiscal 2022 and fiscal 2021 both included 13 weeks. The nine month periods in fiscal 2022 and 2021 both included 39 weeks. In the opinion of management, all adjustments considered necessary for a fair presentation of financial results have been made. Such adjustments consist of only those of a normal recurring nature. Operating results for any interim period are not necessarily indicative of the results that may be expected for the entire year. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The Condensed Consolidated Balance Sheet data as of October 2, 2021 was derived from the Company’s audited financial statements but does not include all disclosures required by U.S. GAAP. For additional information, including the Company’s significant accounting policies, refer to the consolidated financial statements and related footnotes as of and for the fiscal year ended October 2, 2021 as set forth in the Company's fiscal 2021 Form 10-K filed on December 15, 2021. Impacts of COVID-19 and Russia's Invasion of Ukraine on our Business Towards the end of our second quarter of the fiscal year that ended October 3, 2020 ("fiscal 2020") and continuing through the third quarter of fiscal 2022, the novel coronavirus known as "COVID-19" spread throughout the world, resulting in a global pandemic. The pandemic has significantly impacted our financial results from the second half of fiscal 2020, continuing through the third quarter of fiscal 2022, causing, among other matters, reduced demand for school buses and major supply chain disruptions during portions of this period of time. Additionally, Russian military forces launched a large-scale invasion of Ukraine on February 24, 2022. While the Company has no assets or customers in either of these countries, this military conflict significantly impacted our financial results during the third quarter of fiscal 2022, primarily in an indirect manner since the Company does not sell to customers located in, or source goods directly from, either country. Specifically, it has contributed to increased a) costs charged by suppliers for the purchase of inventory that is at least partially dependent on resources originating from either of the countries and b) freight costs, both of which negatively impacted the gross profit recognized on sales during the third quarter of fiscal 2022. The continuing development and fluidity of the pandemic and military conflict in Ukraine and their trailing impacts preclude any prediction as to the ultimate severity of the adverse impacts on our business, financial condition, results of operations, and liquidity. Use of Estimates and Assumptions The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions. At the date of the financial statements, these estimates and assumptions affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities, and during the reporting period, these estimates and assumptions affect the reported

Summary of Significant Accounti

Summary of Significant Accounting Policies and Recently Issued Accounting Standards	9 Months Ended
	Jul. 02, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Recently Issued Accounting Standards	2. Summary of Significant Accounting Policies and Recently Issued Accounting Standards The Company’s significant accounting policies are described in the Company’s fiscal 2021 Form 10-K, filed with the Securities and Exchange Commission (“SEC”) on December 15, 2021. Our senior management has reviewed these significant accounting policies and related disclosures and determined that there were no significant changes in our critical accounting policies in the nine months ended July 2, 2022. Recently Issued Accounting Standards ASU 2020-04 On March 12, 2020, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , providing temporary guidance to ease the potential burden in accounting for reference rate reform primarily resulting from the discontinuation of LIBOR (defined below), which was initially expected to occur on December 31, 2021. The amendments in ASU 2020-04 are elective and apply to all entities that have contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. ASU 2021-01 On January 7, 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope , which refines the scope of Accounting Standards Codification Topic ("ASC") 848, Reference Rate Reform , and clarifies some of its guidance as part of the FASB’s ongoing monitoring of global reference rate reform activities. The ASU permits entities to elect certain optional expedients and exceptions when accounting for derivative contracts and certain hedging relationships affected by changes in the interest rates used for discounting cash flows, computing variation margin settlements, and calculating price alignment interest in connection with reference rate reform activities under way in global financial markets. The above amendments are effective for all entities from March 12, 2020 through December 31, 2022. An entity may elect to apply the amendments to contract modifications on a (i) full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020 or (ii) prospective basis from any date within an interim period that includes or is subsequent to March 12, 2020 through the date that the interim financial statements are issued or available to be issued. On March 5, 2021, the Intercontinental Exchange, Inc. ("ICE") Benchmark Administration ("IBA"), the administrator of the United States Dollar London Interbank Offering Rate ("LIBOR"), issued a statement, following the completion of a formal consultation process, reaffirming the preliminary announcement it made on November 30, 2020, to cease publication of (i) 1 week and 2 month LIBOR subsequent to December 31, 2021 and (ii) the overnight and 1, 3, 6 and 12 month LIBOR tenors subsequent to June 30, 2023. The IBA’s statement regarding such cessation dates primarily resulted from a majority of LIBOR panel banks communicating to the IBA that they would be unwilling to continue contributing to the relevant LIBOR settings after such dates. As a result, the IBA determined that it would be unable to publish the relevant LIBOR settings on a representative basis after such dates. The United Kingdom Financial Conduct Authority ("FCA"), which regulates the IBA, confirmed that, based on information it received from LIBOR panel banks, it does not expect that any LIBOR settings will become unrepresentative before the announced cessation dates summarized above. Currently, the Company’s interest rate collar, which is not designated in a hedge accounting relationship, and Amended Credit Agreement (defined below) are the only contracts that reference an interest rate index (i.e., 3 month LIBOR) that is subject to the reference rate reform guidance included in the above amendments. While the termination date of the interest rate collar, September 30, 2022, occurs prior to the July 1, 2023 date on which the IBA will no longer publish 3 month LIBOR, the Amended Credit Agreement matures on September 13, 2023, approximately 2.5 months subsequent to such cessation date. However, as management does not currently forecast that the Company will have sufficient cash to fund the term loan borrowings that are expected to be outstanding under the terms of the Amended Credit Agreement upon maturity, it is expecting to refinance such borrowings prior to maturity, with such refinancing likely to occur before the July 1, 2023 LIBOR cessation date. Therefore, it is likely that neither the interest rate collar nor Amended Credit Agreement will be modified to reflect the discontinuation of 3 month LIBOR effective July 1, 2023 and accordingly, the Company will not be required to decide whether or not to elect to adopt such amendments prior to or on December 31, 2022 (i.e., the last effective date for adopting the amendments). However, to the extent that either or both of the contracts are

Supplemental Financial Informat

Supplemental Financial Information	9 Months Ended
	Jul. 02, 2022
Condensed Financial Information [Abstract]
Supplemental Financial Information	3. Supplemental Financial Information Inventories The following table presents the components of inventories at the dates indicated: (in thousands of dollars) July 2, 2022 October 2, 2021 Raw materials $ 152,191 $ 74,862 Work in process 59,832 41,257 Finished goods 4,702 9,087 Total inventories $ 216,725 $ 125,206 Product Warranties The following table reflects activity in accrued warranty cost (current and long-term portions combined) for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Balance at beginning of period $ 16,985 $ 19,181 $ 18,550 $ 21,374 Add current period accruals 1,894 2,040 5,181 4,932 Current period reductions of accrual (2,735) (2,441) (7,587) (7,526) Balance at end of period $ 16,144 $ 18,780 $ 16,144 $ 18,780 Extended Warranties The following table reflects activity in deferred warranty income (current and long-term portions combined), for the sale of extended warranties of two Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Balance at beginning of period $ 18,414 $ 20,724 $ 20,144 $ 22,588 Add current period deferred income 1,908 1,921 4,268 4,421 Current period recognition of income (2,184) (2,137) (6,274) (6,501) Balance at end of period $ 18,138 $ 20,508 $ 18,138 $ 20,508 The outstanding balance of deferred warranty income in the table above is considered a "contract liability," and represents a performance obligation of the Company that we satisfy over the term of the arrangement but for which we have been paid in full at the time the warranty was sold. We expect to recognize $2.0 million of the outstanding contract liability during the remainder of fiscal 2022, $6.5 million in fiscal 2023, and the remaining balance thereafter. Self-Insurance The following table reflects our total accrued self-insurance liability, comprised of workers' compensation and health insurance related claims, at the dates indicated: (in thousands of dollars) July 2, 2022 October 2, 2021 Current portion $ 3,876 $ 2,781 Long-term portion 1,805 1,732 Total accrued self-insurance $ 5,681 $ 4,513 The current and long-term portions of the accrued self-insurance liability are reflected in accrued expenses and other liabilities, respectively, on the Condensed Consolidated Balance Sheets. Shipping and Handling Revenues Shipping and handling revenues were $4.2 million and $3.3 million for the three months ended July 2, 2022 and July 3, 2021, respectively, and $11.1 million and $9.2 million for the nine months ended July 2, 2022 and July 3, 2021, respectively. The related cost of goods sold was $3.7 million and $2.9 million for the three months ended July 2, 2022 and July 3, 2021, respectively, and $9.9 million and $8.0 million for the nine months ended July 2, 2022 and July 3, 2021, respectively. Pension Expense Components of net periodic pension benefit (income) expense were as follows for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Interest cost $ 1,092 $ 1,057 $ 3,276 $ 3,171 Expected return on plan assets (2,122) (1,944) (6,366) (5,832) Amortization of prior loss 291 466 873 1,397 Net periodic benefit income $ (739) $ (421) $ (2,217) $ (1,264) Amortization of prior loss, recognized in other comprehensive income (291) (466) (873) (1,397) Total recognized in net periodic pension benefit income and other comprehensive income $ (1,030) $ (887) $ (3,090) $ (2,661) Derivative Instruments We are charged variable rates of interest on our indebtedness outstanding under the Amended Credit Agreement (defined below) which exposes us to fluctuations in interest rates. On October 24, 2018, the Company entered into a four-year interest rate collar with a $150.0 million notional value with an effective date of November 30, 2018. The collar was entered into in order to partially mitigate our exposure to interest rate fluctuations on our variable rate debt. The collar establishes a range whereby we will pay the counterparty if the three month LIBOR rate falls below the established floor rate of 1.5%, and the counterparty will pay us if the three month LIBOR rate exceeds the ceiling rate of 3.3%. The collar settles quarterly through the termination date of September 30, 2022. No payments or receipts are exchanged on the interest rate collar contract unless interest rates rise above or fall below the contracted ceiling or floor rates. During the nine months ended July 2, 2022, the three month LIBOR rate fell below the established floor, which required us to make $1.2 million in total cash payments to the counterparty. Changes in the interest rate collar fair value are recorded in interest expense as the collar does not qualify for hedge accounting. At July 2, 2022, the fair value of the interest rate collar contract was $0. The fair value of the interest rate collar is a Level 2 fair value measurement, based on quoted prices of similar items in active markets.

Debt

Debt	9 Months Ended
	Jul. 02, 2022
Debt Disclosure [Abstract]
Debt	4. Debt On November 24, 2021, the Company executed a fourth amendment to the Credit Agreement, dated as of December 12, 2016; as amended by the first amendment to the Credit Agreement, dated as of September 13, 2018 (the "First Amended Credit Agreement"), the second amendment to the Credit Agreement, dated as of May 7, 2020 (the "Second Amended Credit Agreement"), and the third amendment to the Credit Agreement, dated as of December 4, 2020 (the "Third Amended Credit Agreement"); and as further amended by the fourth amendment (the "Fourth Amended Credit Agreement" and collectively, the "Amended Credit Agreement"). The Fourth Amended Credit Agreement, among other things, provides for certain temporary amendments to the Credit Agreement from the third amendment effective date through and including (a) April 1, 2023 (the “Amended Limited Availability Period”) or (b) the first date on which BBBC (the "Borrower") elects to terminate the Amended Limited Availability Period, in each case, subject to (x) the absence of a default or event of default and (y) pro forma compliance with the financial covenant performance covenants under the Fourth Amended Credit Agreement. With respect to the financial performance covenants, during the Amended Limited Availability Period for the fiscal quarters ending January 1, 2022 through October 1, 2022, the Total Net Leverage Ratio ("TNLR") requirement is not applicable, although it continues to impact the interest rate that is charged on outstanding borrowings as discussed below. Instead, the minimum consolidated EBITDA that the Company is required to maintain during the Amended Limited Availability Period was updated to include fiscal 2022 as set forth in the table below (in millions): Period Minimum Consolidated EBITDA Fiscal quarter ending January 1, 2022 $14.5 Fiscal quarter ending April 2, 2022 $(4.5) Fiscal quarter ending July 2, 2022 $(6.8) Fiscal quarter ending October 1, 2022 $20.0 However, in the event that Borrower elects to terminate the Amended Limited Availability Period in fiscal 2022, the maximum TNLR permitted is 3.50x. The minimum liquidity (in the form of undrawn availability under the revolving credit facility and unrestricted cash and cash equivalents) that the Company must maintain during the Amended Limited Availability Period was amended as set forth in the table below (in millions): Period Minimum Liquidity Fourth amendment effective date through January 1, 2022 $10.0 January 2, 2022 through April 2, 2022 $5.0 April 3, 2022 through July 2, 2022 $15.0 Thereafter $20.0 Additionally, a new financial performance covenant was added in the Fourth Amended Credit Agreement, requiring that school bus units manufactured by the Company (“Units”) not fall below the pre-set thresholds set forth in the table below on a three month trailing basis (“Units Covenant”). The Units Covenant is triggered only if the Company’s liquidity for the most-recently ended fiscal month is less than $50 million during the Amended Limited Availability Period: Period Minimum Units Manufactured Three month period ending November 27, 2021 1,128 Three month period ending January 1, 2022 776 Three month period ending January 29, 2022 748 Three month period ending February 26, 2022 727 Three month period ending April 2, 2022 763 Three month period ending April 30, 2022 1,111 Three month period ending May 28, 2022 1,525 Three month period ending July 2, 2022 2,053 Three month period ending July30, 2022 2,072 Three month period ending August 27, 2022 2,199 Three month period ending October 1, 2022 2,306 If the Units during any three fiscal month period set forth above is less than the minimum required by the Units Covenant, Borrower may elect to carry forward up to 50% of certain applicable excess Units to satisfy the Units Covenant requirement. However, Borrower may not make such election in two consecutive three fiscal month periods. The pricing grid in the Fourth Amended Credit Agreement, which is based on the TNLR, is determined in accordance with the amended pricing matrix set forth below: Level Total Net Leverage Ratio ABR Loans Eurodollar Loans I Less than 2.00x 0.75% 1.75% II Greater than or equal to 2.00x and less than 2.50x 1.00% 2.00% III Greater than or equal to 2.50x and less than 3.00x 1.25% 2.25% IV Greater than or equal to 3.00x and less than 3.25x 1.50% 2.50% V Greater than or equal to 3.25x and less than 3.50x 1.75% 2.75% VI Greater than or equal to 3.50x and less than 4.50x 2.00% 3.00% VII Greater than or equal to 4.50x and less than 5.00x 3.25% 4.25% VIII Greater than 5.00x 4.25% 5.25% During the Amended Limited Availability Period, the applicable rate for outstanding revolving loans is the sum of the rate determined by the administrative agent in accordance with the pricing grid set forth above, plus 0.50%. Additional allowances were made in the Fourth Amended Credit Agreement for the Company to issue or incur up to $100.0 million of qualified equity interests issued by the Company, unsecured subordinated indebtedness or unsecured convertible indebtedness (collectively, “Junior Capital”). Upon the issuance or incurrence of any Junior Capital, the Company is required to prepay the outstanding revolving loans (with no permanent reduction in the revolving commitments) in an amount equal to the lesser of (a) 100% of the net proceeds from such Junior Capital and (b) the aggregate of revolving exposures then outstanding. Prior to the initial issuance or incurrence of any Junior Capital, any issuance, amendment, renewal, or extension of credit during the Amended Limited Availability Period may not cause the aggregate outstanding Revolving Credit Facility principal to exceed $110.0 million (“Availability Cap”). Following the issuance and sale of $75.0 million of common stock in a private placement transaction on December 15, 2021 (see Note 11 for further details), the Availability Cap was permanently reduced to $100.0 million. For the duration of the Amended Limited Availability Period, the Fourth Amended Credit Agreement sets forth additional monthly reporting requirements in connection with the manufactured school bus units required by the financial performance covenants, when applicable. The Company incurred approximately $2.5 million in lender fees and other issuance costs relating to the fourth amendment. Of such total, approximately $1.1 million and $0.8 million was capitalized within other assets and long-term debt (as a contra-balance), respectively, on the Condensed Consolidated Balance Sheets and will be amortized as an adjustment to interest expense on a straight-line basis and utilizing the effective interest method, respectively, until maturity of the Amended Credit Agreement. The remaining approximate $0.5 million was recorded to loss on debt modification on the Condensed Consolidated Statements of Operations. In conjunction with executing the fourth amendment, previously capitalized lender fees and other issuance costs incurred in prior periods totaling approximately $0.1 million were also expensed to loss on debt modification on the Condensed Consolidated Statements of Operations. Term debt consisted of the following at the dates indicated: (in thousands of dollars) July 2, 2022 October 2, 2021 2023 term loan, net of deferred financing costs of $1,715 and $2,027, respectively $ 153,598 $ 164,423 Less: current portion of long-term debt 18,563 14,850 Long-term debt, net of current portion $ 135,035 $ 149,573 Term loans are recognized on the Condensed Consolidated Balance Sheets at the unpaid principal balance, and are not subject to fair value measurement; however, given the variable rates on the loans, the Company estimates that the unpaid principal balance approximates fair value. If measured at fair value in the financial statements, the term loans would be classified as Level 2 in the fair value hierarchy. At July 2, 2022 and October 2, 2021, $155.3 million and $166.5 million, respectively, were outstanding on the term loans. At July 2, 2022 and October 2, 2021, the stated interest rates on the term loans were 7.9% and 4.0%, respectively. At July 2, 2022 and October 2, 2021, the weighted-average annual effective interest rates for the term loans were 7.7% and 6.0%, respectively, which includes amortization of the deferred financing costs and interest relating to the interest rate collar, as applicable. At July 2, 2022, $6.3 million of letters of credit were outstanding, which reduces the availability on the revolving line of credit. There were $60.0 million in borrowings outstanding on the revolving credit facility; therefore, the Company would have been able to borrow $33.7 million on the revolving line of credit. Interest expense on all indebtedness was $3.9 million and $2.8 million for the three months ended July 2, 2022 and July 3, 2021, respectively, and $9.5 million and $7.1 million for the nine months ended July 2, 2022 and July 3, 2021, respectively. The schedule of remaining principal payments through maturity for the term loans is as follows: (in thousands of dollars) Fiscal Year Principal Payments 2022 $ 3,713 2023 151,600 Total remaining principal payments $ 155,313

Income Taxes

Income Taxes	9 Months Ended
	Jul. 02, 2022
Income Tax Disclosure [Abstract]
Income Taxes	5. Income Taxes Income tax provisions for interim periods are based on estimated annual income tax rates, adjusted to reflect the effects of any significant infrequent or unusual items that are required to be discretely recognized within the current interim period. The effective tax rates in the periods presented are largely based upon the annual forecasted pre-tax earnings mix and allocation of certain expenses in various taxing jurisdictions where the Company conducts its business, primarily in the United States of America ("U.S."). In periods where our operating income approximates or is equal to break-even, the effective tax rates for quarter-to-date and full-year periods may not be meaningful due to discrete period items. Three Months The effective tax rate for the three months ended July 2, 2022 was (137.2)%, which differed from the statutory federal income tax rate of 21%. In addition, the amount recorded represents income tax expense in a three month period in which the Company recorded loss before income taxes. This unusual relationship exists as the amount recorded was necessary to adjust the income tax benefit for the nine months ended July 2, 2022, discussed below, to reflect the Company's revised estimated annual income tax rate, including the effects of discrete period tax items. The effective tax rate for the three months ended July 3, 2021 was 33.2%, which differed from the statutory federal tax rate of 21%. The difference is mainly due to normal tax rate items, including impacts from state taxes, net non-deductible compensation expenses and other tax adjustments. The effective tax rate was also impacted by discrete period tax expense resulting from recording a liability for uncertain tax positions ("UTPs"), including accrued interest and penalties, that was partially offset by discrete period tax benefits resulting from share-based compensation expenses and prior year tax return adjustments. Nine Months The effective tax rate for the nine months ended July 2, 2022 was 24.8% and differed from the statutory federal tax rate of 21%. The difference is mainly due to normal tax rate items, including impacts from state taxes and federal and state tax credits (net of valuation allowances), which was partially offset by discrete period tax expense resulting from net non-deductible compensation expenses and other tax adjustments. The effective tax rate for the nine months ended July 3, 2021 was 31.5% and differed from the statutory federal income tax rate of 21%. The difference is mainly due to normal tax rate items, including impacts from state taxes, net non-deductible compensation expenses and other tax adjustments. The effective tax rate was also impacted by discrete period tax expense resulting from recording a liability for UTPs, including accrued interest and penalties, that was partially offset by discrete period tax benefits resulting from share-based compensation expenses and prior year tax return adjustments.

Guarantees, Commitments and Con

Guarantees, Commitments and Contingencies	9 Months Ended
	Jul. 02, 2022
Commitments and Contingencies Disclosure [Abstract]
Guarantees, Commitments and Contingencies	6. Guarantees, Commitments and Contingencies Litigation At July 2, 2022, the Company had a number of product liability and other cases pending. Management believes that, considering the Company’s insurance coverage and its intention to vigorously defend its positions, the ultimate resolution of these matters will not have a material adverse effect on the Company’s financial statements. Environmental The Company is subject to a variety of environmental regulations relating to the use, storage, discharge and disposal of hazardous materials used in its manufacturing processes. Failure by the Company to comply with present and future regulations could subject it to future liabilities. In addition, such regulations could require the Company to acquire costly equipment or to incur other significant expenses to comply with environmental regulations. The Company is currently not involved in any material environmental proceedings and therefore, management believes that the resolution of pending environmental matters will not have a material adverse effect on the Company’s financial statements. Guarantees

Segment Information

Segment Information	9 Months Ended
	Jul. 02, 2022
Segment Reporting [Abstract]
Segment Information	7. Segment Information We manage our business in two operating segments: (i) the Bus segment, which includes the manufacturing and assembly of buses to be sold to a variety of customers across the U.S., Canada and in international markets; and (ii) the Parts segment, which consists primarily of the purchase of parts from third parties to be sold to dealers within the Company’s network. The tables below present segment net sales and gross profit for the periods presented: Net sales Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Bus (1) $ 186,631 $ 181,735 $ 487,552 $ 449,876 Parts (1) 19,452 14,924 55,413 41,915 Segment net sales $ 206,083 $ 196,659 $ 542,965 $ 491,791 (1) Parts segment revenue includes $0.7 million and $0.9 million for the three months ended July 2, 2022 and July 3, 2021, respectively, and $2.6 million and $2.9 million for the nine months ended July 2, 2022 and July 3, 2021, respectively, related to inter-segment sales of parts that were eliminated by the Bus segment upon consolidation. Gross profit Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Bus $ 13,632 $ 20,471 $ 19,290 $ 43,265 Parts 7,961 5,688 21,657 15,855 Segment gross profit $ 21,593 $ 26,159 $ 40,947 $ 59,120 The following table is a reconciliation of segment gross profit to consolidated (loss) income before income taxes for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Segment gross profit $ 21,593 $ 26,159 $ 40,947 $ 59,120 Adjustments: Selling, general and administrative expenses (20,505) (18,073) (58,596) (50,124) Interest expense (3,908) (2,805) (9,481) (7,069) Interest income — — — 1 Other income, net 735 426 2,215 1,491 Loss on debt modification — — (561) (598) (Loss) income before income taxes $ (2,085) $ 5,707 $ (25,476) $ 2,821 Sales are attributable to geographic areas based on customer location and were as follows for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 United States $ 193,571 $ 179,850 $ 488,363 $ 436,286 Canada 12,009 15,072 50,506 49,257 Rest of world 503 1,737 4,096 6,248 Total net sales $ 206,083 $ 196,659 $ 542,965 $ 491,791

Revenue

Revenue	9 Months Ended
	Jul. 02, 2022
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	8. Revenue The following table disaggregates revenue by product category for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Diesel buses $ 79,355 $ 76,753 $ 221,669 $ 212,578 Alternative power buses (1) 96,897 95,877 237,267 214,133 Other (2) 10,952 9,495 30,320 24,240 Parts 18,879 14,534 53,709 40,840 Net sales $ 206,083 $ 196,659 $ 542,965 $ 491,791 (1) Includes buses sold with any power source other than diesel (e.g., gasoline, propane, compressed natural gas ("CNG") or electric). (2) Includes shipping and handling revenue, extended warranty income, surcharges and chassis and bus shell sales.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Jul. 02, 2022
Earnings Per Share [Abstract]
Earnings Per Share	9. (Loss) Earnings Per Share The following table presents the (loss) earnings per share computation for the periods presented: Three Months Ended Nine Months Ended (in thousands except for share data) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Numerator: Net (loss) income $ (6,435) $ 4,332 $ (22,664) $ 2,099 Denominator: Weighted-average common shares outstanding 31,990,860 27,172,162 30,687,406 27,116,915 Weighted-average dilutive securities, restricted stock — 121,399 — 144,835 Weighted-average dilutive securities, stock options — 135,316 — 75,610 Weighted-average shares and dilutive potential common shares (1) 31,990,860 27,428,877 30,687,406 27,337,360 Loss per share: Basic (loss) earnings per share $ (0.20) $ 0.16 $ (0.74) $ 0.08 Diluted (loss) earnings per share $ (0.20) $ 0.16 $ (0.74) $ 0.08 (1) Potentially dilutive securities representing 0.6 million and 0.0 million shares of common stock were excluded from the computation of diluted (loss) earnings per share for the three months ending July 2, 2022 and July 3, 2021, respectively, and potentially dilutive securities representing 0.4 million and 0.1 million shares of common stock were excluded from the computation of diluted (loss) earnings per share for the nine months ending July 2, 2022 and July 3, 2021, respectively, as their effect would have been antidilutive.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Jul. 02, 2022
Equity [Abstract]
Accumulated Other Comprehensive Loss	10. Accumulated Other Comprehensive Loss The following table provides information on changes in accumulated other comprehensive loss ("AOCL") for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) Defined Benefit Pension Plan Total AOCL Defined Benefit Pension Plan Total AOCL July 2, 2022 Beginning Balance $ (44,352) $ (44,352) $ (44,794) $ (44,794) Amounts reclassified and included in earnings 291 291 873 873 Total before taxes 291 291 873 873 Income taxes (70) (70) (210) (210) Ending Balance July 2, 2022 $ (44,131) $ (44,131) $ (44,131) $ (44,131) July 3, 2021 Beginning Balance $ (57,690) $ (57,690) $ (58,397) $ (58,397) Amounts reclassified and included in earnings 466 466 1,397 1,397 Total before taxes 466 466 1,397 1,397 Income taxes (112) (112) (336) (336) Ending Balance July 3, 2021 $ (57,336) $ (57,336) $ (57,336) $ (57,336)

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit)	9 Months Ended
	Jul. 02, 2022
Equity [Abstract]
Stockholders' Equity (Deficit)	11. Stockholders' Equity (Deficit) Sale of Common Stock On December 15, 2021, the Company issued and sold through a private placement transaction an aggregate 4,687,500 shares of its common stock at $16.00 per share (“Private Placement”) to Coliseum Capital Partners, L.P. and Blackwell Partners LLC - Series A (collectively, “Coliseum”). Subsequent to the sale, Coliseum owns an approximate 15% equity interest in the Company. In connection

Nature of Business and Basis _2

Nature of Business and Basis of Presentation (Policies)	9 Months Ended
	Jul. 02, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant inter-company transactions and accounts have been eliminated in consolidation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and Article 8 of Regulation S-X. The Company’s fiscal year ends on the Saturday closest to September 30 with its quarters consisting of thirteen weeks in most years. The fiscal years ending October 1, 2022 ("fiscal 2022") and ended October 2, 2021 ("fiscal 2021") consist or consisted of 52 weeks. The third quarters of fiscal 2022 and fiscal 2021 both included 13 weeks. The nine month periods in fiscal 2022 and 2021 both included 39 weeks. In the opinion of management, all adjustments considered necessary for a fair presentation of financial results have been made. Such adjustments consist of only those of a normal recurring nature. Operating results for any interim period are not necessarily indicative of the results that may be expected for the entire year. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. The Condensed Consolidated Balance Sheet data as of October 2, 2021 was derived from the Company’s audited financial statements but does not include all disclosures required by U.S. GAAP. For additional information, including the Company’s significant accounting policies, refer to the consolidated financial statements and related footnotes as of and for the fiscal year ended October 2, 2021 as set forth in the Company's fiscal 2021 Form 10-K filed on December 15, 2021.
Use of Estimates and Assumptions	Use of Estimates and Assumptions The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions. At the date of the financial statements, these estimates and assumptions affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities, and during the reporting period, these estimates and assumptions affect the reported
Recently Issued Accounting Standards and Recently Adopted Accounting Standards	Recently Issued Accounting Standards ASU 2020-04 On March 12, 2020, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting , providing temporary guidance to ease the potential burden in accounting for reference rate reform primarily resulting from the discontinuation of LIBOR (defined below), which was initially expected to occur on December 31, 2021. The amendments in ASU 2020-04 are elective and apply to all entities that have contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. ASU 2021-01 On January 7, 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope , which refines the scope of Accounting Standards Codification Topic ("ASC") 848, Reference Rate Reform , and clarifies some of its guidance as part of the FASB’s ongoing monitoring of global reference rate reform activities. The ASU permits entities to elect certain optional expedients and exceptions when accounting for derivative contracts and certain hedging relationships affected by changes in the interest rates used for discounting cash flows, computing variation margin settlements, and calculating price alignment interest in connection with reference rate reform activities under way in global financial markets. The above amendments are effective for all entities from March 12, 2020 through December 31, 2022. An entity may elect to apply the amendments to contract modifications on a (i) full retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020 or (ii) prospective basis from any date within an interim period that includes or is subsequent to March 12, 2020 through the date that the interim financial statements are issued or available to be issued. On March 5, 2021, the Intercontinental Exchange, Inc. ("ICE") Benchmark Administration ("IBA"), the administrator of the United States Dollar London Interbank Offering Rate ("LIBOR"), issued a statement, following the completion of a formal consultation process, reaffirming the preliminary announcement it made on November 30, 2020, to cease publication of (i) 1 week and 2 month LIBOR subsequent to December 31, 2021 and (ii) the overnight and 1, 3, 6 and 12 month LIBOR tenors subsequent to June 30, 2023. The IBA’s statement regarding such cessation dates primarily resulted from a majority of LIBOR panel banks communicating to the IBA that they would be unwilling to continue contributing to the relevant LIBOR settings after such dates. As a result, the IBA determined that it would be unable to publish the relevant LIBOR settings on a representative basis after such dates. The United Kingdom Financial Conduct Authority ("FCA"), which regulates the IBA, confirmed that, based on information it received from LIBOR panel banks, it does not expect that any LIBOR settings will become unrepresentative before the announced cessation dates summarized above. Currently, the Company’s interest rate collar, which is not designated in a hedge accounting relationship, and Amended Credit Agreement (defined below) are the only contracts that reference an interest rate index (i.e., 3 month LIBOR) that is subject to the reference rate reform guidance included in the above amendments. While the termination date of the interest rate collar, September 30, 2022, occurs prior to the July 1, 2023 date on which the IBA will no longer publish 3 month LIBOR, the Amended Credit Agreement matures on September 13, 2023, approximately 2.5 months subsequent to such cessation date. However, as management does not currently forecast that the Company will have sufficient cash to fund the term loan borrowings that are expected to be outstanding under the terms of the Amended Credit Agreement upon maturity, it is expecting to refinance such borrowings prior to maturity, with such refinancing likely to occur before the July 1, 2023 LIBOR cessation date. Therefore, it is likely that neither the interest rate collar nor Amended Credit Agreement will be modified to reflect the discontinuation of 3 month LIBOR effective July 1, 2023 and accordingly, the Company will not be required to decide whether or not to elect to adopt such amendments prior to or on December 31, 2022 (i.e., the last effective date for adopting the amendments). However, to the extent that either or both of the contracts are

Supplemental Financial Inform_2

Supplemental Financial Information (Tables)	9 Months Ended
	Jul. 02, 2022
Condensed Financial Information [Abstract]
Inventories	The following table presents the components of inventories at the dates indicated: (in thousands of dollars) July 2, 2022 October 2, 2021 Raw materials $ 152,191 $ 74,862 Work in process 59,832 41,257 Finished goods 4,702 9,087 Total inventories $ 216,725 $ 125,206
Product Warranties	The following table reflects activity in accrued warranty cost (current and long-term portions combined) for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Balance at beginning of period $ 16,985 $ 19,181 $ 18,550 $ 21,374 Add current period accruals 1,894 2,040 5,181 4,932 Current period reductions of accrual (2,735) (2,441) (7,587) (7,526) Balance at end of period $ 16,144 $ 18,780 $ 16,144 $ 18,780 Extended Warranties The following table reflects activity in deferred warranty income (current and long-term portions combined), for the sale of extended warranties of two Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Balance at beginning of period $ 18,414 $ 20,724 $ 20,144 $ 22,588 Add current period deferred income 1,908 1,921 4,268 4,421 Current period recognition of income (2,184) (2,137) (6,274) (6,501) Balance at end of period $ 18,138 $ 20,508 $ 18,138 $ 20,508
Self-Insurance	The following table reflects our total accrued self-insurance liability, comprised of workers' compensation and health insurance related claims, at the dates indicated: (in thousands of dollars) July 2, 2022 October 2, 2021 Current portion $ 3,876 $ 2,781 Long-term portion 1,805 1,732 Total accrued self-insurance $ 5,681 $ 4,513
Pension Expense	Components of net periodic pension benefit (income) expense were as follows for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Interest cost $ 1,092 $ 1,057 $ 3,276 $ 3,171 Expected return on plan assets (2,122) (1,944) (6,366) (5,832) Amortization of prior loss 291 466 873 1,397 Net periodic benefit income $ (739) $ (421) $ (2,217) $ (1,264) Amortization of prior loss, recognized in other comprehensive income (291) (466) (873) (1,397) Total recognized in net periodic pension benefit income and other comprehensive income $ (1,030) $ (887) $ (3,090) $ (2,661)

Debt (Tables)

Debt (Tables)	9 Months Ended
	Jul. 02, 2022
Debt Disclosure [Abstract]
Schedule of Term Debt Instruments	Term debt consisted of the following at the dates indicated: (in thousands of dollars) July 2, 2022 October 2, 2021 2023 term loan, net of deferred financing costs of $1,715 and $2,027, respectively $ 153,598 $ 164,423 Less: current portion of long-term debt 18,563 14,850 Long-term debt, net of current portion $ 135,035 $ 149,573
Schedule of Maturities of Long-term Debt	The schedule of remaining principal payments through maturity for the term loans is as follows: (in thousands of dollars) Fiscal Year Principal Payments 2022 $ 3,713 2023 151,600 Total remaining principal payments $ 155,313
Schedule of Debt Covenant Requirements	Instead, the minimum consolidated EBITDA that the Company is required to maintain during the Amended Limited Availability Period was updated to include fiscal 2022 as set forth in the table below (in millions): Period Minimum Consolidated EBITDA Fiscal quarter ending January 1, 2022 $14.5 Fiscal quarter ending April 2, 2022 $(4.5) Fiscal quarter ending July 2, 2022 $(6.8) Fiscal quarter ending October 1, 2022 $20.0 The minimum liquidity (in the form of undrawn availability under the revolving credit facility and unrestricted cash and cash equivalents) that the Company must maintain during the Amended Limited Availability Period was amended as set forth in the table below (in millions): Period Minimum Liquidity Fourth amendment effective date through January 1, 2022 $10.0 January 2, 2022 through April 2, 2022 $5.0 April 3, 2022 through July 2, 2022 $15.0 Thereafter $20.0 Period Minimum Units Manufactured Three month period ending November 27, 2021 1,128 Three month period ending January 1, 2022 776 Three month period ending January 29, 2022 748 Three month period ending February 26, 2022 727 Three month period ending April 2, 2022 763 Three month period ending April 30, 2022 1,111 Three month period ending May 28, 2022 1,525 Three month period ending July 2, 2022 2,053 Three month period ending July30, 2022 2,072 Three month period ending August 27, 2022 2,199 Three month period ending October 1, 2022 2,306 Level Total Net Leverage Ratio ABR Loans Eurodollar Loans I Less than 2.00x 0.75% 1.75% II Greater than or equal to 2.00x and less than 2.50x 1.00% 2.00% III Greater than or equal to 2.50x and less than 3.00x 1.25% 2.25% IV Greater than or equal to 3.00x and less than 3.25x 1.50% 2.50% V Greater than or equal to 3.25x and less than 3.50x 1.75% 2.75% VI Greater than or equal to 3.50x and less than 4.50x 2.00% 3.00% VII Greater than or equal to 4.50x and less than 5.00x 3.25% 4.25% VIII Greater than 5.00x 4.25% 5.25%

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Jul. 02, 2022
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The tables below present segment net sales and gross profit for the periods presented: Net sales Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Bus (1) $ 186,631 $ 181,735 $ 487,552 $ 449,876 Parts (1) 19,452 14,924 55,413 41,915 Segment net sales $ 206,083 $ 196,659 $ 542,965 $ 491,791 (1) Parts segment revenue includes $0.7 million and $0.9 million for the three months ended July 2, 2022 and July 3, 2021, respectively, and $2.6 million and $2.9 million for the nine months ended July 2, 2022 and July 3, 2021, respectively, related to inter-segment sales of parts that were eliminated by the Bus segment upon consolidation. Gross profit Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Bus $ 13,632 $ 20,471 $ 19,290 $ 43,265 Parts 7,961 5,688 21,657 15,855 Segment gross profit $ 21,593 $ 26,159 $ 40,947 $ 59,120
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	The following table is a reconciliation of segment gross profit to consolidated (loss) income before income taxes for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Segment gross profit $ 21,593 $ 26,159 $ 40,947 $ 59,120 Adjustments: Selling, general and administrative expenses (20,505) (18,073) (58,596) (50,124) Interest expense (3,908) (2,805) (9,481) (7,069) Interest income — — — 1 Other income, net 735 426 2,215 1,491 Loss on debt modification — — (561) (598) (Loss) income before income taxes $ (2,085) $ 5,707 $ (25,476) $ 2,821
Revenue from External Customers by Geographic Areas	Sales are attributable to geographic areas based on customer location and were as follows for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 United States $ 193,571 $ 179,850 $ 488,363 $ 436,286 Canada 12,009 15,072 50,506 49,257 Rest of world 503 1,737 4,096 6,248 Total net sales $ 206,083 $ 196,659 $ 542,965 $ 491,791

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Jul. 02, 2022
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table disaggregates revenue by product category for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Diesel buses $ 79,355 $ 76,753 $ 221,669 $ 212,578 Alternative power buses (1) 96,897 95,877 237,267 214,133 Other (2) 10,952 9,495 30,320 24,240 Parts 18,879 14,534 53,709 40,840 Net sales $ 206,083 $ 196,659 $ 542,965 $ 491,791 (1) Includes buses sold with any power source other than diesel (e.g., gasoline, propane, compressed natural gas ("CNG") or electric).

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Jul. 02, 2022
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the (loss) earnings per share computation for the periods presented: Three Months Ended Nine Months Ended (in thousands except for share data) July 2, 2022 July 3, 2021 July 2, 2022 July 3, 2021 Numerator: Net (loss) income $ (6,435) $ 4,332 $ (22,664) $ 2,099 Denominator: Weighted-average common shares outstanding 31,990,860 27,172,162 30,687,406 27,116,915 Weighted-average dilutive securities, restricted stock — 121,399 — 144,835 Weighted-average dilutive securities, stock options — 135,316 — 75,610 Weighted-average shares and dilutive potential common shares (1) 31,990,860 27,428,877 30,687,406 27,337,360 Loss per share: Basic (loss) earnings per share $ (0.20) $ 0.16 $ (0.74) $ 0.08 Diluted (loss) earnings per share $ (0.20) $ 0.16 $ (0.74) $ 0.08 (1) Potentially dilutive securities representing 0.6 million and 0.0 million shares of common stock were excluded from the computation of diluted (loss) earnings per share for the three months ending July 2, 2022 and July 3, 2021, respectively, and potentially dilutive securities representing 0.4 million and 0.1 million shares of common stock were excluded from the computation of diluted (loss) earnings per share for the nine months ending July 2, 2022 and July 3, 2021, respectively, as their effect would have been antidilutive.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Jul. 02, 2022
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table provides information on changes in accumulated other comprehensive loss ("AOCL") for the periods presented: Three Months Ended Nine Months Ended (in thousands of dollars) Defined Benefit Pension Plan Total AOCL Defined Benefit Pension Plan Total AOCL July 2, 2022 Beginning Balance $ (44,352) $ (44,352) $ (44,794) $ (44,794) Amounts reclassified and included in earnings 291 291 873 873 Total before taxes 291 291 873 873 Income taxes (70) (70) (210) (210) Ending Balance July 2, 2022 $ (44,131) $ (44,131) $ (44,131) $ (44,131) July 3, 2021 Beginning Balance $ (57,690) $ (57,690) $ (58,397) $ (58,397) Amounts reclassified and included in earnings 466 466 1,397 1,397 Total before taxes 466 466 1,397 1,397 Income taxes (112) (112) (336) (336) Ending Balance July 3, 2021 $ (57,336) $ (57,336) $ (57,336) $ (57,336)

Supplemental Financial Inform_3

Supplemental Financial Information - Inventories (Details) - USD ($) $ in Thousands	Jul. 02, 2022	Oct. 02, 2021
Condensed Financial Information [Abstract]
Raw materials	$ 152,191	$ 74,862
Work in process	59,832	41,257
Finished goods	4,702	9,087
Total inventories	$ 216,725	$ 125,206

Supplemental Financial Inform_4

Supplemental Financial Information - Product Warranty Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 16,985	$ 19,181	$ 18,550	$ 21,374
Add current period accruals	1,894	2,040	5,181	4,932
Current period reductions of accrual	(2,735)	(2,441)	(7,587)	(7,526)
Balance at end of period	$ 16,144	$ 18,780	$ 16,144	$ 18,780

Supplemental Financial Inform_5

Supplemental Financial Information - Extended Warranty Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Movement in Extended Product Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 18,414	$ 20,724	$ 20,144	$ 22,588
Add current period deferred income	1,908	1,921	4,268	4,421
Current period recognition of income	(2,184)	(2,137)	(6,274)	(6,501)
Balance at end of period	$ 18,138	$ 20,508	$ 18,138	$ 20,508

Supplemental Financial Inform_6

Supplemental Financial Information Remaining Performance Obligation (Details) $ in Millions	Jul. 02, 2022 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-03
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 2
Revenue, performance obligation, (in years)	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-10-02
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation	$ 6.5
Revenue, performance obligation, (in years)	1 year

Supplemental Financial Inform_7

Supplemental Financial Information - Self Insurance (Details) - USD ($) $ in Thousands	Jul. 02, 2022	Oct. 02, 2021
Condensed Financial Information [Abstract]
Current portion	$ 3,876	$ 2,781
Long-term portion	1,805	1,732
Total accrued self-insurance	$ 5,681	$ 4,513

Supplemental Financial Inform_8

Supplemental Financial Information - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Product Warranty Liability [Line Items]
Shipping and handling revenues	$ 206,083	$ 196,659	$ 542,965	$ 491,791
Minimum
Product Warranty Liability [Line Items]
Extended product warranty, period			2 years
Maximum
Product Warranty Liability [Line Items]
Extended product warranty, period			5 years
Shipping and Handling
Product Warranty Liability [Line Items]
Shipping and handling revenues	4,200	3,300	$ 11,100	9,200
Shipping and handling cost of goods sold	$ 3,700	$ 2,900	$ 9,900	$ 8,000

Supplemental Financial Inform_9

Supplemental Financial Information - Pension Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Condensed Financial Information [Abstract]
Interest cost	$ 1,092	$ 1,057	$ 3,276	$ 3,171
Expected return on plan assets	(2,122)	(1,944)	(6,366)	(5,832)
Amortization of prior loss	291	466	873	1,397
Net periodic benefit income	(739)	(421)	(2,217)	(1,264)
Amortization of prior loss, recognized in other comprehensive income	(291)	(466)	(873)	(1,397)
Total recognized in net periodic pension benefit income and other comprehensive income	$ (1,030)	$ (887)	$ (3,090)	$ (2,661)

Supplemental Financial Infor_10

Supplemental Financial Information Supplemental Financial Information - Derivative Instruments (Details) - USD ($) $ in Millions		3 Months Ended
	Nov. 30, 2018	Jul. 02, 2022
Derivative [Line Items]
Interest rate collar	4 years
Derivative, notional amount	$ 150
Floor interest rate	1.50%
Ceiling interest rate	3.30%
Fair value of interest rate contract		$ 0
Interest Rate Collar
Derivative [Line Items]
Payments for interest rate collar		$ 1.2

Debt - Narrative (Details)

Debt - Narrative (Details) - USD ($)		3 Months Ended
	Dec. 15, 2021	Jul. 02, 2022	Jul. 03, 2021	Nov. 24, 2021	Oct. 02, 2021
Debt Instrument [Line Items]
Net proceeds from sale of stock	$ 75,000,000
Interest expense		$ 3,900,000	$ 2,800,000
Senior Term Loan | Senior Credit Facility
Debt Instrument [Line Items]
Long-term line of credit		$ 155,300,000			$ 166,500,000
Stated interest rate (as a percent)		7.90%			4%
Weighted average effective interest rate (as a percent)		7.70%			6%
Revolving Credit Facility | Line of Credit | Third Amendment to the Credit Agreement
Debt Instrument [Line Items]
Lender fees and other issuance costs				$ 2,500,000
Revolving Credit Facility | Line of Credit | Third Amendment to the Credit Agreement | Gain (Loss) o Extinguishment of Debt [Member]
Debt Instrument [Line Items]
Lender fees and other issuance costs				500,000
Revolving Credit Facility | Line of Credit | Third Amendment to the Credit Agreement | Other Noncurrent Assets
Debt Instrument [Line Items]
Lender fees and other issuance costs				1,100,000
Revolving Credit Facility | Line of Credit | Third Amendment to the Credit Agreement | Senior Notes, Noncurrent
Debt Instrument [Line Items]
Lender fees and other issuance costs				800,000
Revolving Credit Facility | Line of Credit | Second Amendment to Credit Agreement | Gain (Loss) o Extinguishment of Debt [Member]
Debt Instrument [Line Items]
Lender fees and other issuance costs				$ 100,000
Revolving Credit Facility | Line of Credit | Senior Revolving Credit Facility
Debt Instrument [Line Items]
Long-term line of credit		$ 60,000,000
Letters of Credit | Line of Credit | Senior Revolving Credit Facility
Debt Instrument [Line Items]
Remaining borrowing capacity		33,700,000
Letters of credit, amount outstanding		$ 6,300,000

Debt - Schedule of Long-term De

Debt - Schedule of Long-term Debt (Details) - USD ($) $ in Thousands	Jul. 02, 2022	Oct. 02, 2021
Debt Instrument [Line Items]
Current portion of long-term debt	$ 18,563	$ 14,850
Long-term debt	135,035	149,573
Senior Term Loan | 2023 Term Loan
Debt Instrument [Line Items]
Total debt	153,598	164,423
Deferred financing costs	$ 1,715	$ 2,027

Debt - Maturity Schedule (Detai

Debt - Maturity Schedule (Details) $ in Thousands	Jul. 02, 2022 USD ($)
Long-term Debt, Fiscal Year Maturity
2022	$ 3,713
2023	151,600
Total debt	$ 155,313

Debt - Schedule of Debt Covenan

Debt - Schedule of Debt Covenant Requirements (Details) - Line of Credit - Fourth Amendment to Credit Agreement	Nov. 24, 2021 USD ($)
Limited Availability Period One
Debt Instrument [Line Items]
Minimum Consolidated EBITDA	$ 14.5
Minimum Liquidity	10
Minimum Units Manufactured	1,128
Limited Availability Period Two
Debt Instrument [Line Items]
Minimum Consolidated EBITDA	(4.5)
Minimum Liquidity	5
Minimum Units Manufactured	776
Limited Availability Period Three
Debt Instrument [Line Items]
Minimum Consolidated EBITDA	(6.8)
Minimum Liquidity	15
Minimum Units Manufactured	748
Limited Availability Period Four
Debt Instrument [Line Items]
Minimum Consolidated EBITDA	20
Minimum Liquidity	20
Minimum Units Manufactured	727
Limited Availability Period Five
Debt Instrument [Line Items]
Minimum Units Manufactured	763
Limited Availability Period Six
Debt Instrument [Line Items]
Minimum Units Manufactured	1,111
Limited Availability Period Seven
Debt Instrument [Line Items]
Minimum Units Manufactured	1,525
Limited Availability Period Eight
Debt Instrument [Line Items]
Minimum Units Manufactured	2,053
Limited Availability Period Nine
Debt Instrument [Line Items]
Minimum Units Manufactured	2,072
Limited Availability Period Ten
Debt Instrument [Line Items]
Minimum Units Manufactured	2,199
Limited Availability Period Eleven
Debt Instrument [Line Items]
Minimum Units Manufactured	$ 2,306

Debt - Covenants (Details)

Debt - Covenants (Details) - Term Loan - Credit Agreement	Nov. 24, 2021
Less than 2.00x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	0.75%
Less than 2.00x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.75%
Greater than or equal to 2.00x and less than 2.50x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1%
Greater than or equal to 2.00x and less than 2.50x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2%
Greater than or equal to 2.50x and less than 3.00x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.25%
Greater than or equal to 2.50x and less than 3.00x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.25%
Greater than or equal to 3.00x and less than 3.25x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.50%
Greater than or equal to 3.00x and less than 3.25x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.50%
Greater than or equal to 3.25x and less than 3.50x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.75%
Greater than or equal to 3.25x and less than 3.50x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.75%
Greater than or equal to 3.50x and less than 4.50x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2%
Greater than or equal to 3.50x and less than 4.50x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3%
Greater than or equal to 4.50x and less than 5.00x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	3.25%
Greater than or equal to 4.50x and less than 5.00x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	4.25%
Greater than 5.00x | ABR Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	4.25%
Greater than 5.00x | Eurodollar Loans
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	5.25%

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	(137.20%)	33.20%	24.80%	31.50%
Statutory Federal income tax rate (as a percent)	21%	21%	21%	21%

Guarantees, Commitments and C_2

Guarantees, Commitments and Contingencies Guarantees, Commitments and Contingencies - Narrative (Details) $ in Millions	9 Months Ended
	Jul. 02, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Maximum exposure of guarantor	$ 3
Fair value of guarantees	$ 0.1
Remaining maturity on term loan on guarantee (up to)	6 months

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022 USD ($)	Jul. 03, 2021 USD ($)	Jul. 02, 2022 USD ($) segment	Jul. 03, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segment			2
Net sales	$ 206,083	$ 196,659	$ 542,965	$ 491,791
Gross profit	21,593	26,159	40,947	59,120
United States
Segment Reporting Information [Line Items]
Net sales	193,571	179,850	488,363	436,286
Canada
Segment Reporting Information [Line Items]
Net sales	12,009	15,072	50,506	49,257
Rest of world
Segment Reporting Information [Line Items]
Net sales	503	1,737	4,096	6,248
Operating Segments
Segment Reporting Information [Line Items]
Gross profit	21,593	26,159	40,947	59,120
Operating Segments | Bus
Segment Reporting Information [Line Items]
Net sales	186,631	181,735	487,552	449,876
Gross profit	13,632	20,471	19,290	43,265
Operating Segments | Parts
Segment Reporting Information [Line Items]
Net sales	19,452	14,924	55,413	41,915
Gross profit	7,961	5,688	21,657	15,855
Intersegment Eliminations | Parts
Segment Reporting Information [Line Items]
Net sales	$ 700	$ 900	$ 2,600	$ 2,900

Segment Information - Reconcili

Segment Information - Reconciliation of Segment Gross Profit (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment gross profit	$ 21,593	$ 26,159	$ 40,947	$ 59,120
Selling, general and administrative expenses	(20,505)	(18,073)	(58,596)	(50,124)
Interest expense	(3,908)	(2,805)	(9,481)	(7,069)
Interest income	0	0	0	1
Other income, net	735	426	2,215	1,491
Loss on debt modification	0	0	(561)	(598)
(Loss) income before income taxes	(2,085)	5,707	(25,476)	2,821
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment gross profit	21,593	26,159	40,947	59,120
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Selling, general and administrative expenses	(20,505)	(18,073)	(58,596)	(50,124)
Interest expense	(3,908)	(2,805)	(9,481)	(7,069)
Interest income	0	0	0	1
Other income, net	735	426	2,215	1,491
Loss on debt modification	$ 0	$ 0	$ (561)	$ (598)

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 206,083	$ 196,659	$ 542,965	$ 491,791
Diesel buses
Disaggregation of Revenue [Line Items]
Net sales	79,355	76,753	221,669	212,578
Alternative fuel buses
Disaggregation of Revenue [Line Items]
Net sales	96,897	95,877	237,267	214,133
Other
Disaggregation of Revenue [Line Items]
Net sales	10,952	9,495	30,320	24,240
Parts
Disaggregation of Revenue [Line Items]
Net sales	$ 18,879	$ 14,534	$ 53,709	$ 40,840

Earnings Per Share - Summary of

Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net (loss) income	$ (6,435)	$ 4,332	$ (22,664)	$ 2,099
Weighted-average common shares outstanding	31,990,860	27,172,162	30,687,406	27,116,915
Weighted-average shares and dilutive potential common shares	31,990,860	27,428,877	30,687,406	27,337,360
Basic earnings per share (in dollars per share)	$ (0.20)	$ 0.16	$ (0.74)	$ 0.08
Diluted earnings per share (in dollars per share)	$ (0.20)	$ 0.16	$ (0.74)	$ 0.08
Restricted Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted-average dilutive securities	0	121,399	0	144,835
Options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted-average dilutive securities	0	135,316	0	75,610

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0.6	0	0.4	0.1

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			$ (32,656)
Ending Balance	$ 21,987		21,987
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(44,352)	$ (57,690)	(44,794)	$ (58,397)
Amounts reclassified and included in earnings	291	466	873	1,397
Total before taxes	291	466	873	1,397
Income taxes	(70)	(112)	(210)	(336)
Ending Balance	(44,131)	(57,336)	(44,131)	(57,336)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(44,352)	(57,690)	(44,794)	(58,397)
Amounts reclassified and included in earnings	291	466	873	1,397
Total before taxes	291	466	873	1,397
Income taxes	(70)	(112)	(210)	(336)
Ending Balance	$ (44,131)	$ (57,336)	$ (44,131)	$ (57,336)

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) (Details) $ / shares in Units, $ in Millions	Dec. 15, 2021 USD ($) $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Net proceeds from sale of stock	$ 75
Coliseum
Subsidiary, Sale of Stock [Line Items]
Equity interest percentage	15%
Private Placement
Subsidiary, Sale of Stock [Line Items]
Common stock sold (in shares) | shares	4,687,500
Common stock sold, price per share (in USD per share) | $ / shares	$ 16
Net proceeds from sale of stock	$ 74.8