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Acquisitions (Narratives) (Details) - USD ($) | 3 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Business Acquisition [Line Items] |  |
Gain (Loss) on Disposition of Business | $ 0 | $ (169,000)
UNITED STATES |  |
Business Acquisition [Line Items] |  |
Business Exit Costs |  | $ 506,000
Other Restructuring Costs | 1,113,000 |
Subsequent Event [Member] | Office Building [Member] | Portion at Other than Fair Value Measurement [Member] |  |
Business Acquisition [Line Items] |  |
Proceeds from Sale of Buildings | 2,396,000 |
Subsequent Event [Member] | Office Building [Member] | Estimate of Fair Value Measurement [Member] |  |
Business Acquisition [Line Items] |  |
Proceeds from Sale of Buildings | 6,363,000 |
Cost of Sales [Member] | FRANCE |  |
Business Acquisition [Line Items] |  |
Business Exit Costs | 815,000 |
Selling and Marketing Expense [Member] | FRANCE |  |
Business Acquisition [Line Items] |  |
Business Exit Costs | 94,000 |
General and Administrative Expense [Member] | FRANCE |  |
Business Acquisition [Line Items] |  |
Business Exit Costs | $ 233,000 |

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