Note 10 - Acquisitions (Details Textual) - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Feb. 20, 2018 |
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Payments to Acquire Businesses, Gross | $ 10,350,000 | ||
| Calix, Inc. [Member] | |||
| Business Combination, Consideration Transferred, Total | $ 10,350,000 | ||
| Payments to Acquire Businesses, Gross | 10,350,000 | ||
| Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total | 0 | ||
| Purchase Obligation, Total | 3,500,000 | ||
| Goodwill, Acquired During Period | 2,138,000 | ||
| Business Acquisition, Transaction Costs | $ 76,000 | ||
| Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 12 years 328 days | ||
| X | ||||||||||
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. No definition available.
|
| X | ||||||||||
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of liabilities assumed at the acquisition date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. No definition available.
|
| X | ||||||||||
- Details
|