| MCDANIEL TERRY & CO | 218,385 | $49,591 | 5.36% |
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| Bond & Devick Financial Network, Inc. | 21,823 | $4,956 | 3.96% |
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| WINSLOW ASSET MANAGEMENT INC | 66,560 | $15,114 | 2.98% |
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| MONTRUSCO BOLTON INVESTMENTS INC. | 503,901 | $113,026 | 2.61% |
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| ROFFMAN MILLER ASSOCIATES INC /PA/ | 149,167 | $33,873 | 2.52% |
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| MOUNTAIN PACIFIC INVESTMENT ADVISERS INC/ID | 165,776 | $37,644 | 2.46% |
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| HARVEY INVESTMENT CO LLC | 76,692 | $17,415 | 2.14% |
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| RMB Capital Management, LLC | 183,386 | $41,643 | 1.32% |
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| BOWEN HANES & CO INC | 162,225 | $36,838 | 1.10% |
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| NORRIS PERNE & FRENCH LLP/MI | 58,009 | $13,173 | 1.06% |
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| Champlain Investment Partners, LLC | 888,335 | $201,723 | 1.04% |
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| KEYBANK NATIONAL ASSOCIATION/OH | 857,537 | $194,730 | 0.82% |
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| CONTINENTAL INVESTORS SERVICES, INC. | 1,216 | $310 | 0.81% |
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| Private Capital Advisors, Inc. | 23,705 | $5,383 | 0.78% |
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| ROYAL LONDON ASSET MANAGEMENT LTD | 877,147 | $199,253 | 0.78% |
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| JOHNSON INVESTMENT COUNSEL INC | 242,935 | $55,166 | 0.68% |
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| GHP Investment Advisors, Inc. | 45,757 | $10,390 | 0.68% |
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| TimesSquare Capital Management, LLC | 252,100 | $57,247 | 0.64% |
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| LOGAN CAPITAL MANAGEMENT INC | 58,046 | $13,181 | 0.64% |
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| GW&K Investment Management, LLC | 308,539 | $70,063 | 0.62% |
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