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Debt and Financing Obligation - Schedule of Debt (Details) - USD ($) $ in Thousands	Apr. 30, 2018	Mar. 28, 2018	Oct. 31, 2017	Nov. 30, 2015
Debt Instrument [Line Items]
Equipment financing and capital lease obligations	$ 489		$ 632
Deferred finance costs	(1,455)		(1,344)
Total debt	91,607		87,791
Current portion of long-term debt and financing obligation	(10,094)		(28,281)
Long-term debt	81,513		59,510
Connecticut Development Authority Note [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	2,256		2,349
Connecticut Green Bank Note [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	6,051		6,052
Financing Obligation for Sale-Lease Back Transactions [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	46,110		46,937
State of Connecticut Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	10,000		10,000	$ 10,000
Hercules Capital, Inc. [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	26,754	$ 11,900	21,468
New Britain Renewable Energy Term Loan [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	$ 1,402		$ 1,697