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Restatement - Cash flow restatement lines (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014 | Sep. 30, 2014
Cash flows from operating activities: |  |  |  |  |
Net income | $ 1,361 | $ 1,704 | $ 4,155 | $ 4,044 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Income from discontinued operations, net | (516) | (787) | (2,179) | (1,961) |
Depreciation, depletion and amortization |  |  | 3,851 | 3,384 |
Deferred income taxes |  |  | 1,583 | 372 |
Equity in loss of joint ventures | 150 | 31 | 180 | 63 | $ 128
Loss (Gain) on sale of equipment and property |  |  | 120 | (74) |
Stock-based compensation | $ 582 | 791 | 754 | 960 |
Net changes in operating assets and liabilities: |  |  |  |  |
Accounts receivable |  |  | 146 | 1,516 |
Deferred costs and other assets |  |  | (180) | (102) |
Accounts payable and accrued liabilities |  |  | (2,828) | (2,139) |
Income taxes payable and receivable |  |  | (2,348) | (1,379) |
Other long-term liabilities |  |  | 33 | 50 |
Net cash provided by operating activities of continuing operations |  |  | 3,287 | 4,734 |
Net cash provided by operating activities of discontinued operations |  |  | 4,984 | 4,050 |
Net cash provided by operating activities |  |  | $ 8,271 | 8,784 |
Restatement Adjustment [Member] |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |
Net income |  | 1,704 |  | 4,044 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Income from discontinued operations, net |  | (787) |  | (1,961) |
Depreciation, depletion and amortization |  |  |  | 3,384 |
Deferred income taxes |  |  |  | 372 |
Equity in loss of joint ventures |  | 31 |  | 63 |
Loss (Gain) on sale of equipment and property |  |  |  | (74) |
Stock-based compensation |  |  |  | 960 |
Net changes in operating assets and liabilities: |  |  |  |  |
Accounts receivable |  |  |  | 1,516 |
Deferred costs and other assets |  |  |  | (102) |
Accounts payable and accrued liabilities |  |  |  | (2,139) |
Income taxes payable and receivable |  |  |  | (1,379) |
Other long-term liabilities |  |  |  | 50 |
Net cash provided by operating activities of continuing operations |  |  |  | 4,734 |
Net cash provided by operating activities of discontinued operations |  |  |  | 4,050 |
Net cash provided by operating activities |  |  |  | 8,784 |
Previously Reported [Member] |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |
Net income |  | 1,704 |  | 4,044 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Income from discontinued operations, net |  | (392) |  | (1,566) |
Depreciation, depletion and amortization |  |  |  | 3,384 |
Deferred income taxes |  |  |  | 372 |
Equity in loss of joint ventures |  | $ 31 |  | 63 |
Loss (Gain) on sale of equipment and property |  |  |  | (74) |
Stock-based compensation |  |  |  | 960 |
Net changes in operating assets and liabilities: |  |  |  |  |
Accounts receivable |  |  |  | 1,516 |
Deferred costs and other assets |  |  |  | (102) |
Accounts payable and accrued liabilities |  |  |  | (2,139) |
Income taxes payable and receivable |  |  |  | (1,379) |
Other long-term liabilities |  |  |  | 50 |
Net cash provided by operating activities of continuing operations |  |  |  | 5,129 |
Net cash provided by operating activities of discontinued operations |  |  |  | 3,655 |
Net cash provided by operating activities |  |  |  | $ 8,784 |

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