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Fair Value of Financial Instruments (Tables) | 12 Months Ended
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Jun. 30, 2018
Fair Value Disclosures [Abstract] |
Recurring Fair Value Measurements [Table Text Block] | Fair value of financial assets, included in cash and cash equivalents, and financial liabilities is as follows:
|  | Estimated Fair Value Measurements |  | Total Fair
Recurring Fair Value Measurements |  | Level 1 |  | Level 2 |  | Level 3 |  | Value
June 30, 2018 |  |  |  |  |  |  |  |
Financial Assets: |  |  |  |  |  |  |  |
Money market funds |  | $ | 14,918 |  |  | $ | — |  |  | $ | — |  |  | $ | 14,918 |
June 30, 2017 |  |  |  |  |  |  |  |  |  |
Financial Assets: |  |  |  |  |  |  |  |
Money market funds |  | $ | 68,474 |  |  | $ | — |  |  | $ | — |  |  | $ | 68,474 |
Certificate of Deposit |  | $ | — |  |  | $ | 2,001 |  |  | $ | — |  |  | $ | 2,001 |
Financial Liabilities: |  |  |  |  |  |  |  |
Revolving credit facility |  | $ | — |  |  | $ | 50,000 |  |  | $ | — |  |  | $ | 50,000 |
Non-Recurring Fair Value Measurements [Table Text Block] |
Non-Recurring Fair Value Measurements |  |  |  |  |  |  |  |
June 30, 2018 |  |  |  |  |  |  |  |
Long-lived assets held for sale |  | $ | — |  |  | $ | 1,300 |  |  | $ | — |  |  | $ | 1,300 |
June 30, 2017 |  |  |  |  |  |  |  |
Long-lived assets held for sale (a) |  | $ | — |  |  | $ | 1,300 |  |  | $ | — |  |  | $ | 1,300 |
(a) In accordance with ASC Subtopic 360-10, long-lived assets held for sale with a carrying value of $4,575 were written down to their fair value of $1,300, resulting in an impairment totaling $3,275, which was included in earnings for the fiscal year ended June 30, 2017. The Company has entered into an agreement to sell these assets. That sale is expected to be completed during the third quarter of fiscal 2019.

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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