Significant Accounting Policies (Policies)	9 Months Ended
Significant Accounting Policies (Policies)	Dec. 31, 2018
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission. In the opinion of management, such unaudited information includes all adjustments, consisting of normal recurring adjustments necessary for a fair presentation of our financial position and results of operations. The results of operations for the interim periods are not necessarily indicative of results that may be achieved for the entire year. The financial statements and related notes do not include all information and footnotes required by U.S. GAAP for annual reports. This quarterly report should be read in conjunction with the consolidated financial statements included in our annual report on Form 10 -K for the year ended March 31, 2018.
Fair Value Measurement, Policy [Policy Text Block]	Fair Value Measurements As of December 31, 2018 and March 31, 2018, our financial instruments were categorized as Level 1 (inputs are quoted prices in active markets) and include cash, accounts receivable, accounts payable, accrued liabilities and short-term and long-term debt. With the exception of long-term debt, the carrying value of these financial instruments is considered to be representative of their fair value due to the short maturity of these instruments. Our debt has a variable interest rate, so the carrying amount approximates fair value because interest rates on these instruments approximate the interest rate on debt with similar terms available to us.
Business Combinations Policy [Policy Text Block]	Acquisitions During the three months ended December 31, 2018, we completed the purchase of Point Six Wireless, LLC. We made an initial allocation of the purchase price at the date of acquisition based on our understanding of the fair value of acquired assets and assumed liabilities. We obtained the information to make the allocation during due diligence and through the use of other information available to us. In the months after closing, we will obtain additional information about the assets and liabilities acquired, including asset appraisals, and we will refine the estimates of the fair value to more accurately allocate the purchase price.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016 - 02, Leases (Topic 842 ) . The pronouncement requires lessees to recognize a liability for lease obligations, which represents the discounted obligation to make future minimum lease payments, and a corresponding right-of-use asset on the balance sheet for all leases with terms greater than 12 months. The guidance also requires qualitative and quantitative disclosures designed to present financial statement users with the ability to assess the amount, timing, and uncertainty of cash flows arising from leases. We have initiated our plan for the adoption and implementation of this new accounting standard, including assessing our lease arrangements, evaluating practical expedients, and making necessary changes to our accounting policies, processes, and internal controls over financial reporting. We expect to adopt the standard using the optional transition method, which will allow us to apply the standard as of the effective date, therefore we will not apply changes to comparative periods presented in our financial statements. We are still assessing the expected impact of the standard on our consolidated balance sheets, but it will not significantly impact our consolidated statements of operations and cash flows. Recently Adopted Accounting Pronouncements In August 2018, the Securities and Exchange Commission issued Release No. 33 - 10532 that amends and clarifies certain financial reporting requirements. The principal change to our financial reporting is the inclusion of the annual disclosure requirement of changes in stockholders’ equity in Rule 3 - 04 of Regulation S- X to interim periods. We adopted this new rule beginning the quarter ended December 31, 2018 and have included our Consolidated Statements of Stockholders' Equity with this quarterly filing on Form 10 -Q. During the nine months ended December 31, 2018, we elected to early-adopt ASU 2018 - 15 Intangibles – Goodwill and Other Internal-Use Software: Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (“ASU 2018 - 15” ) on a prospective basis. ASU 2018 - 15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs of other internal-use software arrangements. Accordingly, we capitalized $206 of costs incurred during the nine months ended December 31, 2018 to implement a hosted enterprise resource planning system to our European subsidiaries. The related asset is held in prepaid expenses and other on the condensed consolidated balance sheets, and we began amortizing the expense to general and administrative costs on our condensed consolidated statements of operations on a straight-line basis over the contractual term of the arrangement. Effective April 1, 2018, we adopted ASU 2014 - 09 Revenue from Contracts with Customers (Topic 606 ) and all related amendments (referred to collectively hereinafter as “ASU 606” ) to all contracts on a modified retrospective basis. ASU 606 requires an entity to recognize revenue for the transfer of goods or services equal to the amount it expects to be entitled to receive for the goods and services. The adoption did not have a material impact on our condensed consolidated balance sheets, statements of operations, or cash flows. The primary impact of adoption was the enhancement of disclosures to provide additional clarity regarding how revenue is earned and recognized, and to show revenues at a more disaggregated level, included in Note 2. “Revenue Recognition.” In March 2018, the FASB issued ASU 2018 - 05, Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118. We adopted the ASU immediately upon release. The amendments in the update provide guidance on when to record and disclose provisional amounts for certain income tax effects of the Tax Cuts and Jobs Act ("TCJA"). The amendments also require any provisional amounts or subsequent adjustments to be included in net income from continuing operations. Additionally, this ASU discusses required disclosures that an entity must make with regard to the TCJA. As of the three months ended December 31, 2018, we have completed our analysis of the TCJA’s income tax effects. the Refer to Note 8. “Income Taxes” for additional information on the TCJA. The TCJA created a new requirement that global intangible low taxed income earned by controlled foreign corporations (“CFCs”) must be included currently in the gross income of the CFC’s U.S. shareholder. Under U.S. GAAP, we are allowed to make an accounting policy choice of how GILTI taxes are treated. We have elected to treat taxes due on future U.S. inclusions in taxable income related to GILTI as current period expenses when incurred (“the period cost method”).