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Note 16 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Current : |  |  |  |  |  |  |  |  |  |  |  |
Federa l |  | $ | (454 | ) |  | $ | (740 | ) |  | $ | (5,076 | )
Stat e |  |  | 49 |  |  |  | (102 | ) |  |  | 35 |
Total current income tax benefi t |  |  | (405 | ) |  |  | (842 | ) |  |  | (5,041 | )
Deferred : |  |  |  |  |  |  |  |  |  |  |  |
Federa l |  |  | (766 | ) |  |  | (2,883 | ) |  |  | (5,524 | )
Stat e |  |  | 71 |  |  |  | (373 | ) |  |  | 2,042 |
Total deferred income tax benefi t |  |  | (695 | ) |  |  | (3,256 | ) |  |  | (3,482 | )
|  | $ | (1,100 | ) |  | $ | (4,098 | ) |  | $ | (8,523 | )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Income tax benefit at federal statutory rate of 35 % |  | $ | (3,322 | ) |  | $ | (3,755 | ) |  | $ | (9,133 | )
State benefit, net of federal income tax effec t |  |  | (472 | ) |  |  | (286 | ) |  |  | (440 | )
Federal and state income tax credit s |  |  | 36 |  |  |  | (154 | ) |  |  | (5,060 | )
Disallowed domestic manufacturing deductio n |  |  | - |  |  |  | - |  |  |  | 630 |
Change in valuation allowanc e |  |  | 1,570 |  |  |  | 585 |  |  |  | 2,059 |
Excess income tax shortfall on share-based compensatio n |  |  | 765 |  |  |  | - |  |  |  | - |
Effect of Tax Cuts and Jobs Act of 201 7 |  |  | 874 |  |  |  | - |  |  |  | - |
Uncertain income tax position s |  |  | (562 | ) |  |  | (4 | ) |  |  | 1,275 |
Goodwill impairment (nondeductible ) |  |  | - |  |  |  | - |  |  |  | 1,849 |
Nondeductible expense s |  |  | 63 |  |  |  | 63 |  |  |  | 91 |
Nontaxable adjustment to contingent consideratio n |  |  | - |  |  |  | (580 | ) |  |  | 103 |
Othe r |  |  | (52 | ) |  |  | 33 |  |  |  | 103 |
Income tax benefi t |  | $ | (1,100 | ) |  | $ | (4,098 | ) |  | $ | (8,523 | )
Effective income tax rat e |  |  | (11.6 | )% |  |  | (37.8 | )% |  |  | (32.4 | )%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31 , |
|  | 201 7 |  |  | 201 6 |
Deferred income tax assets : |  |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts, ne t |  | $ | - |  |  | $ | 1,270 |
Accrued employee benefit s |  |  | 2,806 |  |  |  | 5,025 |
Inventorie s |  |  | 296 |  |  |  | 563 |
Trade receivable, ne t |  |  | 105 |  |  |  | 199 |
Net operating loss carryforward s |  |  | 9,850 |  |  |  | 15,637 |
Tax credit carryforward s |  |  | 5,478 |  |  |  | 5,069 |
Other asset s |  |  | 1,201 |  |  |  | 1,830 |
Othe r |  |  | 81 |  |  |  | 1,018 |
|  |  | 19,817 |  |  |  | 30,611 |
Valuation allowanc e |  |  | (10,413 | ) |  |  | (8,217 | )
|  |  | 9,404 |  |  |  | 22,394 |
Deferred income tax liabilities : |  |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts, ne t |  |  | (110 | ) |  |  | - |
Property and equipmen t |  |  | (9,524 | ) |  |  | (22,380 | )
Intangible asset s |  |  | (433 | ) |  |  | (819 | )
Prepaid expense s |  |  | (278 | ) |  |  | (477 | )
|  |  | (10,345 | ) |  |  | (23,676 | )
Net deferred income tax liabilitie s |  | $ | (941 | ) |  | $ | (1,282 | )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | Year Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Unrecognized income tax benefits, beginning of yea r |  | $ | 4,874 |  |  | $ | 4,874 |  |  | $ | 2,313 |
Decreases for lapse in statute of limitation s |  |  | (520 | ) |  |  | - |  |  |  | (1,199 | )
Increases for positions taken in prior year s |  |  | - |  |  |  | - |  |  |  | 3,716 |
Decreases for positions taken in prior years |  |  | (238 | ) |  |  | - |  |  |  | - |
Increases for positions taken in the current yea r |  |  | - |  |  |  | - |  |  |  | 44 |
Unrecognized income tax benefits, end of yea r |  | $ | 4,116 |  |  | $ | 4,874 |  |  | $ | 4,874 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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