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Quarterly Financial Results (Unaudited) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Results (Unaudited) | Quarterly Financial Results (Unaudited) The following financial information for interim periods includes transactions which affect comparability of the quarterly results for the years ended December 31, 2016 and 2015. Financial information for interim periods was as follows:
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
| (in thousands, except per share amounts)
2016 |  |  |  |  |  |  |
Product sales | $ | 15,382 |  |  | $ | 20,062 |  |  | $ | 19,020 |  |  | $ | 18,611 |
Service sales | 24,998 |  |  | 25,904 |  |  | 26,826 |  |  | 25,319 |
Cost of product sales | 10,670 |  |  | 12,989 |  |  | 11,001 |  |  | 11,674 |
Cost of service sales | 12,991 |  |  | 13,259 |  |  | 13,576 |  |  | 13,140 |
Operating expenses | 20,093 |  |  | 20,411 |  |  | 18,256 |  |  | 19,384 |
(Loss) income from operations | (3,374 | ) |  | (693 | ) |  | 3,013 |  |  | (268 | )
Net (loss) income | $ | (2,791 | ) |  | $ | (806 | ) |  | $ | 2,863 |  |  | $ | (6,783 | )
Net (loss) income per share (a): |  |  |  |  |  |  |
Basic | $ | (0.18 | ) |  | $ | (0.05 | ) |  | $ | 0.18 |  |  | $ | (0.43 | )
Diluted | $ | (0.18 | ) |  | $ | (0.05 | ) |  | $ | 0.18 |  |  | $ | (0.43 | )
2015 |  |  |  |  |  |  |
Product sales | $ | 15,386 |  |  | $ | 17,946 |  |  | $ | 15,622 |  |  | $ | 27,259 |
Service sales | 25,919 |  |  | 26,909 |  |  | 28,833 |  |  | 26,760 |
Cost of product sales | 10,485 |  |  | 12,017 |  |  | 10,275 |  |  | 14,627 |
Cost of service sales | 13,260 |  |  | 13,693 |  |  | 14,454 |  |  | 13,409 |
Operating expenses | 19,468 |  |  | 19,403 |  |  | 19,520 |  |  | 20,815 |
(Loss) income from operations | (1,908 | ) |  | (258 | ) |  | 206 |  |  | 5,168 |
Net (loss) income | $ | (1,422 | ) |  | $ | 37 |  |  | $ | (463 | ) |  | $ | 4,101 |
Net (loss) income per share (a): |  |  |  |  |  |  |
Basic | $ | (0.09 | ) |  | $ | 0.00 |  |  | $ | (0.03 | ) |  | $ | 0.26 |
Diluted | $ | (0.09 | ) |  | $ | 0.00 |  |  | $ | (0.03 | ) |  | $ | 0.26 |
(a) | Net (loss) income per share is computed independently for each of the quarters. Therefore, the net (loss) income per share for the four quarters may not equal the annual net (loss) income per share data.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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