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Note 2 - Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Note 2 - Accounting Policies [Line Items]

Schedule of Weighted Average Number of Shares [Table Text Block]

Earnings per share have been calculated using the following share information:



	2013	2012	2011
Weighted average number of common shares used for basic EPS	38,692,658	39,222,737	39,362,138
Effect of dilutive stock options and restricted and deferred stock unit awards	389,684	313,654	336,317
Weighted average number of common shares and dilutive potential common stock used in dilutive EPS	39,082,342	39,536,391	39,698,455

Balance Sheet [Member]

Note 2 - Accounting Policies [Line Items]

Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block]

The Company’s equity in earnings of affiliated companies for all periods presented below includes acquisition-related depreciation and amortization expense and is net of income taxes associated with these earnings. Financial data for these investments in affiliated companies at December 31, 2013 and 2012 and for each of the years in the three-year period ended December 31, 2013 are summarized in the following tables (in thousands):



	December 31,
Balance sheet data	2013		2012⁽¹⁾
Current assets	$	10,220	$	32,752
Non-current assets	10,022		22,495
Current liabilities	1,743		16,006
Non-current liabilities	—		484

Schedule of Variable Interest Entities [Table Text Block]

Financial data for consolidated variable interest entities at December 31, 2013 and 2012 and for each of the years in the three-year period ended December 31, 2013 are summarized in the following tables (in thousands):



	December 31,
Balance sheet data	2013		2012
Current assets	$	55,651	$	65,251
Non-current assets	47,606		47,086
Current liabilities	33,886		45,604
Non-current liabilities	25,020		23,169

Income Statement [Member]

Note 2 - Accounting Policies [Line Items]

Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block]



Income statement data	2013 ⁽¹⁾		2012		2011
Revenue	$	89,157	$	141,233	$	134,716
Gross profit	27,336		40,342		29,651
Net income	17,946		22,009		12,512
Equity in earnings of affiliated companies	5,159		6,359		3,471

_____________________

⁽¹⁾ Includes the financial data of Insituform-Germany through the date of its sale in June 2013.

Schedule of Variable Interest Entities [Table Text Block]



Income statement data	2013		2012		2011
Revenue	$	85,908	$	107,821	$	55,792
Gross profit	12,998		19,625		12,005
Net income	1,892		3,622		1,959

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

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