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Summary of Significant Accounting Policies (Details Textual) |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
May 13, 2019 USD ($) | Feb. 28, 2018 USD ($) $ / shares shares | Mar. 31, 2019 hub | Dec. 31, 2019 USD ($) Segment | Dec. 31, 2018 USD ($) | Jun. 21, 2019 | Jan. 01, 2019 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |  |
Share purchase agreement | $ 89,387,000 |  |  |  |  |  |
Interest rate | 5.00% |  |  |  |  | 12.00% |
Proceeds from sale of fixed assets |  |  |  | $ 103,000 | $ 0 |  |
Sale of treasury stock (in shares) | shares |  | 377,000 |  |  |  |  |
Purchase price (in USD per share) | $ / shares |  | $ 11.95 |  |  |  |  |
Sale of treasury stock |  | $ 4,500,000 |  | $ 0 | 4,500,000 |  |
Capital lease term |  |  | 5 years |  |  |  |
Satellite hubs leased | hub |  |  | 3 |  |  |  |
Number of operating segments | Segment |  |  |  | 2 |  |  |
Concentration of Credit Risk and Single Source Suppliers |  |  |  |  |  |  |
Marketable securities |  |  |  | $ 29,907,000 | 25,000 |  |
Advertising Costs |  |  |  |  |  |  |
Advertising expense |  |  |  | 2,290,000 | 1,818,000 |  |
Foreign Currency Translation |  |  |  |  |  |  |
Foreign currency transaction losses (gain), before tax |  |  |  | 181,000 | $ (552,000) |  |
Lease liabilities |  |  |  | 6,313,000 |  |  | $ 10,469
Right of use assets |  |  |  | $ 6,286,000 |  |  | $ 10,469
Revenue-generating assets |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful lives |  |  |  | P5Y |  |  |

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