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Note 3 - Trade Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | 20 1 8 |  |  | 20 1 7 |
|  | ( i n thousands) |
Billed |  | $ | 56,766 |  |  | $ | 51,236 |
Unbilled |  |  | 8,808 |  |  |  | 9,154 |
Allowance for doubtful accounts |  |  | (2,224 | ) |  |  | (1,335 | )
Total accounts receivable—net |  | $ | 63,350 |  |  | $ | 59,055 |
Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block] |
|  | 20 1 8 |  |  | 20 1 7 |  |  | 20 1 6 |
|  | ( i n thousands) |
Balance—beginning of year |  | $ | 1,335 |  |  | $ | 994 |  |  | $ | 549 |
Provision for bad debts |  |  | 889 |  |  |  | 341 |  |  |  | 445 |
Charge-offs |  |  | - |  |  |  | - |  |  |  | - |
Recoveries |  |  | - |  |  |  | - |  |  |  | - |
Balance—end of year |  | $ | 2,224 |  |  | $ | 1,335 |  |  | $ | 994 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the activity in the total allowance for credit losses related to financing receivables (such as loans or lease receivables) for entities that have an unclassified balance sheet, including the balance in the allowance at the beginning and end of each period, additions charged to operations, direct write-downs charged against the allowance, and recoveries of amounts previously charged off. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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