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Note 1 - Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Summary of Valuation Allowance [Table Text Block]

Years ended December 31:		Beginning balance January 1,				Additional provisions to (reversal of) allowance				Write-offs and other deductions				Ending balance December 31,
2016		$	1,857			$	(241	)		$	(271	)		$	1,345
2015		$	1,767			$	1,100			$	(1,010	)		$	1,857
2014		$	1,736			$	774			$	(743	)		$	1,767

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(in thousands except per share data)
		2016				2015				2014
Numerator:
Net income		$	16,835			$	42,085			$	17,808
Denominator:
Denominator for basic income per share – weighted-average shares			18,182				18,145				15,250
Effect of dilutive securities:
Equivalent shares issuable upon conversion of unvested restricted shares			84				161				266
Equivalent shares issuable upon conversion of unvested employee stock options			-				5				1
Denominator for diluted income per share adjusted weighted-average shares and assumed conversions		$	18,266			$	18,311			$	15,517
Net income per share:
Basic income per share		$	0.93			$	2.32			$	1.17
Diluted income per share		$	0.92			$	2.30			$	1.15

X

- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
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- Definition

Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Valuation Allowance
-URI http://asc.fasb.org/extlink&oid=6528051

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-Publisher FASB
-Name Accounting Standards Codification
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