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Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jan. 31, 2019 | Dec. 31, 2018
Subcontractors |  |
Subsequent Event [Line Items] |  |
Date of acquisition |  | Jan. 31, 2019
Subsequent Event | Subcontractors |  |
Subsequent Event [Line Items] |  |
Acquired purchase price | $ 13,200 |
Subsequent Event | Plan III Common Units Repurchase Program |  |
Subsequent Event [Line Items] |  |
Company's common units repurchased and retired | 0.5 |
Average price paid per unit | $ 9.39 |
Subsequent Event | Dividend Declared |  |
Subsequent Event [Line Items] |  |
Distribution declared | 0.1175 |
Partners capital projected distribution amount on annualized basis | 0.47 |
Minimum dividend distribution per unit | $ 0.0675 |
Amount to paid to common unit holders | $ 6,100 |
Amount to paid to the General Partner | 200 |
Incentive distribution to the General Partner | 160 |
Incentive distributions to management | $ 200 |
Dividend payable date | Feb. 05, 2019 |
Dividend record date | Jan. 28, 2019 |

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