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Note 15 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | (740 | ) |  | $ | (5,076 | ) |  | $ | 4,336 |
State |  |  | (102 | ) |  |  | 26 |  |  |  | 334 |
Total current income tax expense (benefit) |  |  | (842 | ) |  |  | (5,050 | ) |  |  | 4,670 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (3,541 | ) |  |  | (8,855 | ) |  |  | 305 |
State |  |  | (373 | ) |  |  | 1,954 |  |  |  | (324 | )
Total deferred income tax benefit |  |  | (3,914 | ) |  |  | (6,901 | ) |  |  | (19 | )
|  | $ | (4,756 | ) |  | $ | (11,951 | ) |  | $ | 4,651 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Income tax benefit at federal statutory rate of 35% |  | $ | (4,907 | ) |  | $ | (14,470 | ) |  | $ | (532 | )
State benefit, net of federal income tax effect |  |  | (362 | ) |  |  | (866 | ) |  |  | (96 | )
Federal and state income tax credits |  |  | (154 | ) |  |  | (6,684 | ) |  |  | (91 | )
Disallowed domestic manufacturing deduction |  |  | - |  |  |  | 630 |  |  |  | - |
Change in valuation allowance |  |  | 1,155 |  |  |  | 5,210 |  |  |  | 9 |
Uncertain income tax positions |  |  | (4 | ) |  |  | 2,082 |  |  |  | 5 |
Goodwill impairment (nondeductible) |  |  | - |  |  |  | 1,849 |  |  |  | 5,623 |
Nondeductible expenses |  |  | 63 |  |  |  | 91 |  |  |  | 207 |
Nontaxable adjustment to contingent consideration |  |  | (580 | ) |  |  | 103 |  |  |  | (611 | )
Other |  |  | 33 |  |  |  | 104 |  |  |  | 137 |
Income tax expense (benefit) |  | $ | (4,756 | ) |  | $ | (11,951 | ) |  | $ | 4,651 |
Effective income tax rate |  |  | (33.9 | ) % |  |  | (28.9 | ) % |  |  | 305.6 | %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31, |
|  | 2016 |  |  | 2015 |
Deferred income tax assets: |  |  |  |  |  |  |  |
Costs and estimated earnings in excess of billings on uncompleted contracts, net |  | $ | 1,270 |  |  | $ | 2,888 |
Accrued employee benefits |  |  | 5,025 |  |  |  | 5,946 |
Inventories |  |  | 563 |  |  |  | 2,618 |
Trade receivable, net |  |  | 199 |  |  |  | 266 |
Net operating loss carryforwards |  |  | 15,637 |  |  |  | 7,843 |
Tax credit carryforwards |  |  | 5,069 |  |  |  | 4,791 |
Other assets |  |  | 1,830 |  |  |  | 2,737 |
Other |  |  | 1,018 |  |  |  | 520 |
|  |  | 30,611 |  |  |  | 27,609 |
Valuation allowance |  |  | (8,217 | ) |  |  | (7,057 | )
|  |  | 22,394 |  |  |  | 20,552 |
Deferred income tax liabilities: |  |  |  |  |  |  |  |
Property and equipment |  |  | (22,380 | ) |  |  | (24,229 | )
Intangible assets |  |  | (819 | ) |  |  | (980 | )
Prepaid expenses |  |  | (477 | ) |  |  | (467 | )
|  |  | (23,676 | ) |  |  | (25,676 | )
Net deferred income tax liabilities |  | $ | (1,282 | ) |  | $ | (5,124 | )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | Year Ended December 31, |
|  | 2016 |  |  | 2015 |  |  | 2014 |
Unrecognized income tax benefits, beginning of year |  | $ | 4,874 |  |  | $ | 2,313 |  |  | $ | 6,207 |
Decreases for settlements |  |  | - |  |  |  | - |  |  |  | (3,265 | )
Decreases for lapse in statute of limitations |  |  | - |  |  |  | (1,199 | ) |  |  | (115 | )
Decreases for positions taken in current year |  |  | - |  |  |  | - |  |  |  | (615 | )
Increases for positions taken in prior years |  |  | - |  |  |  | 3,716 |  |  |  | 101 |
Increases for positions taken in the current year |  |  | - |  |  |  | 44 |  |  |  | - |
Unrecognized income tax benefits, end of year |  | $ | 4,874 |  |  | $ | 4,874 |  |  | $ | 2,313 |

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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=65882285&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=65882285&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=65882285&loc=d3e32687-109319 + Details
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