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Quarterly Financial Results (Unaudited) | 12 Months Ended
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Dec. 31, 2017
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, 2017 and 2016. Financial information for interim periods was as follows:
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
| (in thousands, except per share amounts)
2017 |  |  |  |  |  |  |
Product sales | $ | 14,863 |  |  | $ | 14,323 |  |  | $ | 14,169 |  |  | $ | 13,613 |
Service sales | 25,348 |  |  | 26,126 |  |  | 26,281 |  |  | 25,365 |
Cost of product sales | 10,539 |  |  | 9,295 |  |  | 9,578 |  |  | 8,062 |
Cost of service sales | 13,268 |  |  | 13,094 |  |  | 13,374 |  |  | 12,956 |
Operating expenses | 20,874 |  |  | 19,428 |  |  | 19,299 |  |  | 19,085 |
Loss from operations | (4,470 | ) |  | (1,368 | ) |  | (1,801 | ) |  | (1,125 | )
Net loss | $ | (4,885 | ) |  | $ | (2,026 | ) |  | $ | (2,438 | ) |  | $ | (1,685 | )
Net loss per share (a): |  |  |  |  |  |  |
Basic | $ | (0.30 | ) |  | $ | (0.12 | ) |  | $ | (0.15 | ) |  | $ | (0.10 | )
Diluted | $ | (0.30 | ) |  | $ | (0.12 | ) |  | $ | (0.15 | ) |  | $ | (0.10 | )
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 | )
(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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- References No definition available. + Details
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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 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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