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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Schedule II – Valuation and Qualifying Accounts (in thousands)
|  |  |  |  |  | Addition s |  |  |  |  |  |  |  |  |
Descriptio n |  | Balance at Beginning of Perio d |  |  | Charged to Costs and Expense s |  |  | Charged to Other Account s |  |  | Deduction s |  |  | Balance at End of Perio d |
Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,348 |  |  | $ | 506 |  |  | $ | - |  |  | $ | (555 | ) |  | $ | 1,299 |
Tax valuation reserve |  | $ | 1,381 |  |  | $ | - |  |  | $ | - |  |  | $ | (351 | ) |  | $ | 1,030 |
Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,299 |  |  | $ | 369 |  |  | $ | - |  |  | $ | (283 | ) |  | $ | 1,385 |
Tax valuation reserve |  | $ | 1,030 |  |  | $ | 987 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,017 |
Year Ended December 31, 201 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful account s |  | $ | 1,385 |  |  | $ | 641 |  |  | $ | - |  |  | $ | (416 | ) |  | $ | 1,610 |
Tax valuation reserv e |  | $ | 2,017 |  |  | $ | 362 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,379 |

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- References No definition available. + Details
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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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