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| 0001437749-19-003059-index.html | 2019-02-21 16:25:02 | |
| 0001437749-19-003059.txt | 2019-02-21 16:25:02 | |
 0001437749-19-003059-xbrl.zip | 148160 | 2019-02-21 16:25:02 |
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| ex_134981.htm | 769 | 2019-02-21 16:25:02 |
| FilingSummary.xml | 29031 | 2019-02-21 16:25:02 |
| Financial_Report.xlsx | 52793 | 2019-02-21 16:25:02 |
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| R8.htm | 151978 | 2019-02-21 16:25:02 |
| R9.htm | 32336 | 2019-02-21 16:25:02 |
| report.css | 2767 | 2019-02-21 16:25:02 |
| Show.js | 1085 | 2019-02-21 16:25:02 |
| usac-20181231.xml | 1730244 | 2019-02-21 16:25:02 |
| usac-20181231.xsd | 49395 | 2019-02-21 16:25:02 |
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| usac20181231_10k.htm | 1289430 | 2019-02-21 16:25:02 |