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Impact of Restatement to Balance Sheets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
--- | --- | --- | --- | --- | --- | --- | ---
Current assets: |  |  |  |  |  |  |
Cash and cash equivalents | $ 15,092 | $ 17,077 | $ 19,307 | $ 12,794 | $ 10,262 | $ 22,314 | $ 33,357
Short-term investments | 36,137 | 36,461 | 28,862 | 24,739 | 27,491 | 18,112 |
Trade accounts receivable, net | 9,435 | 8,327 | 16,709 | 13,819 | 15,392 | 12,693 |
Financing receivables, net | 3,055 | 2,614 | 1,890 | 1,678 | 1,533 | 2,004 |
Income tax receivable | 273 | 473 | 483 | 13,290 | 13,290 | 17,369 |
Inventories | 20,752 | 22,382 | 22,655 | 24,676 | 30,844 | 32,422 |
Prepaid expenses and other current assets | 1,623 | 1,854 | 1,827 | 1,855 | 1,826 | 1,295 |
Total current assets | 86,367 | 89,188 | 91,733 | 92,851 | 100,638 | 106,209 |
Rental equipment, net | 16,462 | 20,551 | 24,485 | 26,821 | 30,973 | 46,036 |
Property, plant and equipment, net | 37,399 | 43,432 | 44,484 | 43,477 | 44,732 | 48,709 |
Non-current inventories | 55,935 | 65,642 | 69,448 | 77,089 | 73,696 | 92,378 |
Deferred income tax assets, net | 259 | 267 | 247 | 179 | 216 | 4,554 |
Non-current financing receivables, net | 8,195 | 588 | 427 | 1,385 | 1,817 | 1,516 |
Prepaid income taxes | 450 | 1,464 | 1,843 | 2,227 | 2,620 | 4,095 |
Other assets | 629 | 641 | 80 | 80 | 80 | 95 |
Total assets | 205,696 | 221,773 | 232,747 | 244,109 | 254,772 | 303,592 |
Total liabilities and stockholders' equity | $ 205,696 | 221,773 | 232,747 | 244,109 | 254,772 | 303,592 |
As Reported |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |
Cash and cash equivalents |  | 17,077 | 19,307 | 12,794 | 10,262 | 22,314 |
Short-term investments |  | 36,461 | 28,862 | 24,739 | 27,491 | 18,112 |
Trade accounts receivable, net |  | 8,327 | 16,709 | 13,819 | 15,392 | 12,693 |
Financing receivables, net |  | 2,614 | 1,890 | 1,678 | 1,533 | 2,004 |
Income tax receivable |  | 473 | 483 | 13,290 | 13,290 | 17,369 |
Inventories |  | 88,024 | 92,103 | 101,765 | 104,540 | 124,800 |
Prepaid expenses and other current assets |  | 1,854 | 1,827 | 1,855 | 1,826 | 1,295 |
Total current assets |  | 154,830 | 161,181 | 169,940 | 174,334 | 198,587 |
Rental equipment, net |  | 20,551 | 24,485 | 26,821 | 30,973 | 46,036 |
Property, plant and equipment, net |  | 43,432 | 44,484 | 43,477 | 44,732 | 48,709 |
Deferred income tax assets, net |  | 267 | 247 | 179 | 216 | 4,554 |
Non-current financing receivables, net |  | 588 | 427 | 1,385 | 1,817 | 1,516 |
Prepaid income taxes |  | 1,464 | 1,843 | 2,227 | 2,620 | 4,095 |
Other assets |  | 641 | 80 | 80 | 80 | 95 |
Total assets |  | 221,773 | 232,747 | 244,109 | 254,772 | 303,592 |
Total liabilities and stockholders' equity |  | 221,773 | 232,747 | 244,109 | 254,772 | 303,592 |
Adjustment |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |
Inventories |  | (65,642) | (69,448) | (77,089) | (73,696) | (92,378) |
Total current assets |  | (65,642) | (69,448) | (77,089) | (73,696) | (92,378) |
Non-current inventories |  | $ 65,642 | $ 69,448 | $ 77,089 | $ 73,696 | $ 92,378 |

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