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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Aug. 31, 2017 | Jun. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2010
Numerator for basic and diluted earnings per share: |  |  |  |  |  |  |
Net income |  |  | $ 10,182 | $ 7,128 | $ 21,381 | $ 20,007 |
Less net income attributable to non-controlling interests |  |  | (35) | (23) | (866) | (65) |
Less earnings allocated to unvested restricted stock |  |  | (342) | (263) | (879) | (796) |
Net income available for common stockholders: basic and diluted |  |  | $ 9,805 | $ 6,842 | $ 19,636 | $ 19,146 |
Denominator for basic earnings per share: |  |  |  |  |  |  |
Weighted average number of common shares |  |  | 18,646,000 | 18,000,000 | 18,521,000 | 17,859,000 |
Effect of dilutive securities: |  |  |  |  |  |  |
RSUs |  |  | 59,000 | 79,000 | 41,000 | 102,000 |
Denominator for diluted earnings per share: weighted average number of shares |  |  | 18,705,000 | 18,079,000 | 18,562,000 | 17,961,000 |
Earnings per common share, basic |  |  | $ 0.53 | $ 0.38 | $ 1.06 | $ 1.07 |
Earnings per common share, diluted |  |  | $ 0.52 | $ 0.38 | $ 1.06 | $ 1.07 |
RSUs |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares granted |  |  | 76,250 | 76,250 | 76,250 | 76,250 |
Number of shares vested |  |  |  |  |  | 113,584 |
2016 Incentive Plan |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 64,453 | 38,125 | 64,453 | 38,125 |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 38,125 |  | 38,125 |  |
Effect of dilutive securities: |  |  |  |  |  |  |
RSUs |  |  | 102,578 | 38,125 | 102,578 | 38,125 |
2016 Incentive Plan | September 26, 2017 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 33,524 | 38,125 | 33,524 | 38,125 |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 38,125 |  | 38,125 |  |
Common Shares not included Attributable To Share Based Payment Arrangements Due To Applicable Return On Metric |  |  |  |  | 4,601 | 38,125 |
Effect of dilutive securities: |  |  |  |  |  |  |
RSUs |  |  | 71,649 | 38,125 | 71,649 | 38,125 |
2016 Incentive Plan | July 1, 2018 |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 30,929 |  | 30,929 |  |
Common Shares not included Attributable To Share Based Payment Arrangements Due To Applicable Return On Metric |  |  |  |  | 45,321 |  |
Effect of dilutive securities: |  |  |  |  |  |  |
RSUs |  |  | 30,929 |  | 30,929 |  |
2009 Incentive Plan | RSUs |  |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |  |
Number of shares granted |  |  |  |  |  |  | 200,000
Number of shares vested |  | 113,584 |  |  |  |  |
Number of shares issued | 113,584 |  |  |  |  |  |

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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=109256448&loc=d3e4984-109258 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1252-109256 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 60B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109260490&loc=SL5780133-109256 + Details
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