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Note 13 - Acquisitions - Fair Value of Net Assets Acquired (Details) - USD ($) |  |  | 3 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 11, 2019 | Apr. 01, 2019 | Mar. 31, 2019 | Dec. 31, 2019 | Nov. 12, 2019 | Sep. 30, 2019 | Aug. 08, 2019 | Aug. 07, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Intangible assets |  |  | $ 4,120,000 |  |  |  |  |  |  |
Goodwill |  |  |  | $ 33,637,000 |  | $ 28,342,000 |  |  | $ 9,515,000 |
Intangible assets, estimated fair value |  |  |  | $ 21,982,000 |  |  |  |  |  |
Astero [Member] |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ 11,000 |  |  |  |  |  |  |  |
Accounts receivable, net |  | 154,000 |  |  |  |  |  |  |  |
Inventory |  | 456,000 |  |  |  |  |  |  |  |
Goodwill |  | 9,515,000 |  |  |  |  |  |  |  |
Other assets |  | 99,000 |  |  |  |  |  |  |  |
Accounts Payable |  | (250,000) |  |  |  |  |  |  |  |
Other liabilities |  | 164,000 |  |  |  |  |  |  |  |
Fair value of net assets acquired |  | 13,941,000 |  |  |  |  |  |  |  |
Other liabilities |  | (164,000) |  |  |  |  |  |  |  |
Fair value of net assets acquired |  | 13,941,000 |  |  |  |  |  |  |  |
Inventory |  | 456,000 |  |  |  |  |  |  |  |
Intangible assets, estimated fair value |  | 12,150,000 |  |  |  |  |  |  |  |
Astero [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 160,000 | $ 160,000 |  |  |  |  |  |  |
Intangible assets (Year) |  | 6 years | 4 years |  |  |  |  |  |  |
Intangible assets, estimated fair value |  | $ 80,000 |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) |  | 6 years | 4 years |  |  |  |  |  |  |
Astero [Member] | Customer Relationships [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets (Year) |  |  |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) |  |  |  |  |  |  |  |  |  |
Astero [Member] | Trade Names [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 470,000 | $ 470,000 |  |  |  |  |  |  |
Intangible assets (Year) |  | 9 years | 9 years |  |  |  |  |  |  |
Intangible assets, estimated fair value |  | $ 1,320,000 |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) |  | 9 years | 9 years |  |  |  |  |  |  |
Astero [Member] | Trade Names [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets (Year) |  |  |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) |  |  |  |  |  |  |  |  |  |
Astero [Member] | Developed Technology Rights [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 2,840,000 | $ 2,840,000 |  |  |  |  |  |  |
Intangible assets (Year) |  |  | 9 years |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) |  |  | 9 years |  |  |  |  |  |  |
Astero [Member] | Developed Technology Rights [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets (Year) |  |  | 5 years |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) |  |  | 5 years |  |  |  |  |  |  |
Astero [Member] | In Process Research and Development [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  | $ 650,000 | $ 650,000 |  |  |  |  |  |  |
SAVSU [Member] |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  |  |  |  |  | $ 1,251,000 |  |
Accounts receivable, net |  |  |  |  |  |  |  | 753,000 |  |
Intangible assets |  |  |  |  |  |  | $ 12,200,000 |  |  |
Goodwill |  |  |  |  |  |  | 19,500,000 | 21,037,000 |  |
Accounts Payable |  |  |  |  |  |  |  | (807,000) |  |
Other liabilities |  |  |  |  |  |  |  | 232,000 |  |
Fair value of net assets acquired |  |  |  |  |  |  | 35,800,000 | 35,850,000 |  |
Prepaid expenses and other current assets |  |  |  |  |  |  |  | 19,000 |  |
Property, plant and equipment, net |  |  |  |  |  |  |  | 546,000 |  |
Operating right-of-use asset |  |  |  |  |  |  | 232,000 | 233,000 |  |
Assets held for lease |  |  |  |  |  |  |  | 2,441,000 |  |
Deferred tax liabilities |  |  |  |  |  |  |  | (1,541,000) |  |
Other liabilities |  |  |  |  |  |  |  | (232,000) |  |
Fair value of net assets acquired |  |  |  |  |  |  | $ 35,800,000 | 35,850,000 |  |
SAVSU [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  | 80,000 |  |
SAVSU [Member] | Trade Names [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  | 1,320,000 |  |
SAVSU [Member] | Developed Technology Rights [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |  | $ 10,750,000 |  |
CBS Acquisition [Member] |  |  |  |  |  |  |  |  |  |
Accounts receivable, net | $ 1,044,000 |  |  |  |  |  |  |  |  |
Inventory | 3,232,000 |  |  |  |  |  |  |  |  |
Intangible assets |  |  |  |  | $ 6,800,000 |  |  |  |  |
Goodwill | 3,085,000 |  |  |  | $ 3,100,000 |  |  |  |  |
Accounts Payable | (1,328,000) |  |  |  |  |  |  |  |  |
Other liabilities | 611,000 |  |  |  |  |  |  |  |  |
Fair value of net assets acquired | 15,856,000 |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets | 29,000 |  |  |  |  |  |  |  |  |
Property, plant and equipment, net | 3,615,000 |  |  |  |  |  |  |  |  |
Other liabilities | (611,000) |  |  |  |  |  |  |  |  |
Fair value of net assets acquired | 15,856,000 |  |  |  |  |  |  |  |  |
Inventory | 3,232,000 |  |  |  |  |  |  |  |  |
Intangible assets, estimated fair value | 6,790,000 |  |  |  |  |  |  |  |  |
CBS Acquisition [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 560,000 |  |  |  |  |  |  |  |  |
Intangible assets (Year) | 6 years |  |  |  |  |  |  |  |  |
Intangible assets, estimated fair value | $ 560,000 |  |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) | 6 years |  |  |  |  |  |  |  |  |
CBS Acquisition [Member] | Trade Names [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 800,000 |  |  |  |  |  |  |  |  |
Intangible assets (Year) | 6 years |  |  |  |  |  |  |  |  |
Intangible assets, estimated fair value | $ 800,000 |  |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) | 6 years |  |  |  |  |  |  |  |  |
CBS Acquisition [Member] | Developed Technology Rights [Member] |  |  |  |  |  |  |  |  |  |
Intangible assets | $ 5,430,000 |  |  |  |  |  |  |  |  |
Intangible assets (Year) | 9 years |  |  |  |  |  |  |  |  |
Intangible assets, estimated fair value | $ 5,430,000 |  |  |  |  |  |  |  |  |
Intangible assets, estimated useful life (Year) | 9 years |  |  |  |  |  |  |  |  |

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
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