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Supplemental Cash Flow Information | 12 Months Ended
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Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract] |
Supplemental Cash Flow Information | Supplemental Cash Flow Information Supplemental cash flow information is as follows (in thousands):
| Year ended December 31,
| 2015 |  | 2014 |  | 2013
Supplemental non-cash investing and financing activities: |  |  |  |  |
Value of common stock issued in acquisitions | $ | 1,014 |  |  | $ | 2,043 |  |  | $ | 52,711 |
Final Florida Chemical acquisition adjustment | — |  |  | 1,162 |  |  | — |
Value of common stock issued in payment of accrued liability | — |  |  | 600 |  |  | — |
Equipment acquired through capital leases | — |  |  | — |  |  | 754 |
Exercise of stock options by common stock surrender | 1,332 |  |  | 1,198 |  |  | 3,907 |
Supplemental cash payment information: |  |  |  |  |
Interest paid | $ | 1,398 |  |  | $ | 1,285 |  |  | $ | 1,859 |
Income taxes paid, net of refunds | 1,547 |  |  | 22,389 |  |  | 17,783 |

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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