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Quarterly Financial Information (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Data [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] |
|  |  | First |  | Second |  | Third |  | Fourth |  | Fiscal
2018 |  | Quarter |  | Quarter |  | Quarter |  | Quarter |  | Year
|  |  | (in thousands, except per share data)
Revenues | $ | 26,759 | $ | 31,522 | $ | 28,635 | $ | 33,858 | $ | 120,774
Cost of revenues |  | 13,490 |  | 16,167 |  | 12,818 |  | 15,118 |  | 57,593
| Gross profit |  | 13,269 |  | 15,355 |  | 15,817 |  | 18,740 |  | 63,181
Total operating expenses |  | 14,535 |  | 15,737 |  | 14,927 |  | 16,998 |  | 62,197
Operating (loss) income |  | (1,266) |  | (382) |  | 890 |  | 1,742 |  | 984
Other expense, net |  | (3,979) |  | (1,485) |  | (1,798) |  | (1,697) |  | (8,959)
(Loss) income from continuing operations before income taxes |  | (5,245) |  | (1,867) |  | (908) |  | 45 |  | (7,975)
Income tax expense (benefit) |  | 605 |  | (369) |  | (652) |  | (3,260) |  | (3,676)
Net (loss) income from continuing operations |  | (5,850) |  | (1,498) |  | (256) |  | 3,305 |  | (4,299)
Income (loss) from discontinued operations, net of tax |  | 1,786 |  | 34 |  | - |  | (443) |  | 1,377
Net (loss) income | $ | (4,064) | $ | (1,464) | $ | (256) | $ | 2,862 | $ | (2,922)
(Loss) earnings per share: |  |  |  |  |  |  |  |  |  |
| Basic (loss) earnings per common share from continuing operations | $ | (0.16) | $ | (0.04) | $ | (0.01) | $ | 0.09 | $ | (0.12)
| Basic earnings (loss) per common share from discontinued operations |  | 0.05 |  | - |  | - |  | (0.01) |  | 0.04
| Basic (loss) earnings per common share | $ | (0.11) | $ | (0.04) | $ | (0.01) | $ | 0.08 | $ | (0.08)
| Diluted (loss) earnings per common share from continuing operations | $ | (0.16) | $ | (0.04) | $ | (0.01) | $ | 0.09 | $ | (0.12)
| Diluted earnings (loss) per common share from discontinued operations |  | 0.05 |  | - |  | - |  | (0.01) |  | 0.04
| Diluted (loss) earnings per common share | $ | (0.11) | $ | (0.04) | $ | (0.01) | $ | 0.08 | $ | (0.08)
|  |  | First |  | Second |  | Third |  | Fourth |  | Fiscal
2017 |  | Quarter |  | Quarter |  | Quarter |  | Quarter |  | Year
|  |  | (in thousands, except per share data)
Revenues | $ | 18,086 | $ | 18,958 | $ | 18,717 | $ | 21,646 | $ | 77,407
Cost of revenues |  | 8,509 |  | 9,885 |  | 9,217 |  | 10,626 |  | 38,237
| Gross profit |  | 9,577 |  | 9,073 |  | 9,500 |  | 11,020 |  | 39,170
Total operating expenses |  | 9,927 |  | 9,342 |  | 9,890 |  | 10,646 |  | 39,805
Operating (loss) income |  | (350) |  | (269) |  | (390) |  | 374 |  | (635)
Other expense, net |  | (400) |  | (463) |  | (274) |  | (849) |  | (1,986)
Loss from continuing operations before income taxes |  | (750) |  | (732) |  | (664) |  | (475) |  | (2,621)
Income tax benefit |  | (7) |  | (115) |  | (19) |  | (464) |  | (605)
Loss from continuing operations |  | (743) |  | (617) |  | (645) |  | (11) |  | (2,016)
(Loss) income from discontinued operations, net of tax |  | (323) |  | 236 |  | 228 |  | 1,010 |  | 1,151
Net (loss) income | $ | (1,066) | $ | (381) | $ | (417) | $ | 999 | $ | (865)
Loss (earnings) per share: |  |  |  |  |  |  |  |  |  |
| Basic (loss) earnings per common share from continuing operations | $ | (0.02) | $ | (0.02) | $ | (0.02) | $ | - | $ | (0.06)
| Basic (loss) earnings per share from discontinued operations |  | (0.01) |  | 0.01 |  | 0.01 |  | 0.03 |  | 0.03
| Basic (loss) earnings per common share | $ | (0.03) | $ | (0.01) | $ | (0.01) | $ | 0.03 | $ | (0.02)
| Diluted (loss) earnings per common share from continuing operations | $ | (0.02) | $ | (0.02) | $ | (0.02) | $ | - | $ | (0.06)
| Diluted (loss) earnings per common share from discontinued operations |  | (0.01) |  | 0.01 |  | 0.01 |  | 0.03 |  | 0.03
| Diluted (loss) earnings per common share | $ | (0.03) | $ | (0.01) | $ | (0.01) | $ | 0.03 | $ | (0.02)

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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