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Note 9 - Income Taxes	9 Months Ended
Note 9 - Income Taxes	Sep. 30, 2016
Notes to Financial Statements
Income Tax Disclosure [Text Block]	9. Income Taxes The Company files income tax returns in the United States Federal jurisdiction, in a limited number of foreign jurisdictions, and in many state jurisdictions. Internal Revenue Service examinations have been completed for years prior to 2011. With few exceptions, the Company is no longer subject to U.S. Federal, state or foreign income tax examinations for years before 2012. The Company recorded an income tax benefit at an estimated effective tax rate of 133.5% and 19.1% for the three and nine months ended September 30, 2016, and an income tax benefit at an estimated effective tax rate of 79.7% and 35.5% for the three and nine months ended September 30, 2015. The income tax benefit in the third quarter of 2016 is due primarily to a reduction in the expected increase in the valuation allowance for 2016, driven by updates to forecasted earnings and the taxable gain associated with the sale of the Denver facility in the fourth quarter of 2016 (see Note 16). The Company’s effective tax rate for the nine months ended September 30, 2016 is lower than statutory rates because a portion of the Company’s net operating losses from the period are subject to a valuation allowance. The Company had $4.9 million of unrecognized tax benefits at September 30, 2016 and December 31, 2015. The Company does not believe it is reasonably possible that the total amounts of unrecognized tax benefits will change in the following twelve months; however, actual results could differ from those currently expected. Effectively all the unrecognized tax benefits would affect the Company’s effective tax rate if recognized at some point in the future. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. During the three months ended September 30, 2016, the Company determined that it no longer considers the earnings of its Mexican subsidiary to be indefinitely reinvested outside the United States. This change was made to allow the Company to more efficiently manage its cash balances and working capital. The change did not have a significant effect on the Company’s income taxes.