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Segment Reporting | 12 Months Ended
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Dec. 31, 2013
Segment Reporting | (16) SEGMENT REPORTING At December 31, 2013, the Company has determined that it has three reporting segments comprised of the following subsidiaries, ZMI and ZBC, ZND and ZEU, and ZMS. This determination was made based on the nature of the products and services offered to customers or the nature of the function in the organization. The accounting policies for each of these segments are the same as those described in Note 2, and inter-segment transactions are eliminated. Net revenue was primarily generated from sales in the United States.
|  | ZMI & ZBC |  |  | ZND & ZEU |  |  | ZMS |  |  | TOTAL |
YEAR ENDED DECEMBER 31, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  | $ | 21,184 |  |  | $ | 500 |  |  | $ | — |  |  | $ | 21,684 |
Gross profit |  |  | 13,333 |  |  |  | 211 |  |  |  | — |  |  |  | 13,544 |
Total assets |  |  | 17,564 |  |  |  | 756 |  |  |  | 10 |  |  |  | 18,330 |
Interest expense |  |  | 607 |  |  |  | - |  |  |  | - |  |  |  | 607 |
Depreciation and amortization |  |  | 732 |  |  |  | 99 |  |  |  | 8 |  |  |  | 839 |
Income tax expense (benefit) |  |  | (523 | ) |  |  | (72 | ) |  |  | (195 | ) |  |  | (790 | )
Goodwill impairment |  |  | - |  |  |  | 251 |  |  |  | - |  |  |  | 251 |
Intangible impairment |  |  | - |  |  |  | 160 |  |  |  | - |  |  |  | 160 |
YEAR ENDED DECEMBER 31, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sales |  | $ | 39,372 |  |  | $ | 294 |  |  | $ | — |  |  | $ | 39,666 |
Gross profit |  |  | 30,708 |  |  |  | 188 |  |  |  | - |  |  |  | 30,896 |
Total assets |  |  | 25,262 |  |  |  | 674 |  |  |  | — |  |  |  | 25,936 |
Interest expense |  |  | 435 |  |  |  | - |  |  |  | - |  |  |  | 435 |
Depreciation and amortization |  |  | 854 |  |  |  | 54 |  |  |  | 4 |  |  |  | 912 |
Income tax expense (benefit) |  |  | 1,264 |  |  |  | (236 | ) |  |  | (241 | ) |  |  | 788 |

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599 + Details
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