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Summary of Significant Accounting Policies - Revision of Statements of Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
--- | --- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | $ 10,649 | $ 1,806 | $ 2,333
Ending balances | $ 14,527 | $ 10,649 | $ 1,806
Common Stock |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances, shares | 14,028 | 13,958 | 14,601
Beginning balances | $ 14 | $ 14 | $ 15
Ending balances, shares | 14,232 | 14,028 | 13,958
Ending balances | $ 14 | $ 14 | $ 14
Additional Paid-In Capital |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | 119,242 | 116,749 | 114,423
Ending balances | 121,599 | 119,242 | 116,749
Accumulated Deficit |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | (108,600) | (114,706) | (111,989)
Ending balances | (106,992) | (108,600) | (114,706)
Accumulated Other Comprehensive Income (Loss) |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | (7) | (251) | (116)
Ending balances | (94) | (7) | (251)
As Reported |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | $ 12,131 | 3,325 | 3,990
Ending balances |  | $ 12,131 | $ 3,325
As Reported | Common Stock |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances, shares | 14,028 | 13,958 | 14,601
Beginning balances | $ 14 | $ 14 | $ 15
Ending balances, shares |  | 14,028 | 13,958
Ending balances |  | $ 14 | $ 14
As Reported | Additional Paid-In Capital |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | 120,150 | 117,657 | 115,331
Ending balances |  | 120,150 | 117,657
As Reported | Accumulated Deficit |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | (108,076) | (114,095) | (111,240)
Ending balances |  | (108,076) | (114,095)
As Reported | Accumulated Other Comprehensive Income (Loss) |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | 43 | (251) | (116)
Ending balances |  | 43 | (251)
Adjustments |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | (1,482) | (1,519) | (1,657)
Ending balances |  | (1,482) | (1,519)
Adjustments | Additional Paid-In Capital |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | (908) | (908) | (908)
Ending balances |  | (908) | (908)
Adjustments | Accumulated Deficit |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | (524) | (611) | (749)
Ending balances |  | (524) | $ (611)
Adjustments | Accumulated Other Comprehensive Income (Loss) |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Beginning balances | $ (50) |  |
Ending balances |  | $ (50) |

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