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Note 2 - Summary of Significant Accounting Policies | 9 Months Ended
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Sep. 30, 2021
Notes to Financial Statements |
Significant Accounting Policies [Text Block] | 2. Summary of Significant Accounting Policies Restricted cash Restricted cash as of September 30, 2021 represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A. The balance of restricted cash totaling $1,161 is comprised of $891 in current assets relating to existing standby letters of credit with varying maturity dates and expire no later than September 30, 2022 and $270 in long-term assets will remain through the expiration dates of the underlying standby letter of credits (the latest maturity date is February 1, 2023) with BMO Harris Bank N.A. Refer to Note 10 Debt Financing for further information on the Cash Collateral Security agreement with BMO Harris Bank N.A. The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows:
|  | September 30, |  |  | September 30, |
|  | 2021 |  |  | 2020 |
Cash and cash equivalents |  | $ | 35,161 |  |  | $ | 9,418 |
Restricted cash included in current assets |  |  | 891 |  |  |  | 2,025 |
Restricted cash included in long-term assets |  |  | 270 |  |  |  | 367 |
Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows |  | $ | 36,322 |  |  | $ | 11,810 |
Leases The Company applies the provisions of Accounting Standards Codification ("ASC") 842, Leases. The Company determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset. Right-of-use ("ROU") assets and lease liabilities are recognized at the lease commencement date based on the present value of the future minimum lease payments over the lease term. Operating ROU assets also include the impact of any lease incentives. Operating leases are included in right-of-use operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Condensed Consolidated Balance Sheets. Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components, and we elected the practical expedient to not separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient to keep leases with an initial term of 12 months or less off of the Condensed Consolidated Balance Sheet.

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- Definition The entire disclosure for all significant accounting policies of the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123372394&loc=d3e18726-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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