Note 3 - Impact of Recently Issued Accounting Pronouncements (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Reclassification from Current Deferred Tax Assets to Noncurrent Deferred Tax Assets [Member] | Fiscal 2014 [Member]
Prior Period Reclassification Adjustment	$ 3,323
Reclassification from Current Deferred Tax Liabilities to Noncurrent Deferred Tax Liabilities [Member] | Fiscal 2014 [Member]
Prior Period Reclassification Adjustment	296
Increase (Decrease) in Working Capital	(3,619)
Reclassification from Current Deferred Tax Liabilities to Noncurrent Deferred Tax Liabilities [Member] | Fiscal 2013 [Member]
Increase (Decrease) in Working Capital	(2,776)
Reclassification from Current Deferred Tax Liabilities to Noncurrent Deferred Tax Liabilities [Member] | Fiscal Year 2012 [Member]
Increase (Decrease) in Working Capital	(1,469)
Reclassification from Current Deferred Tax Liabilities to Noncurrent Deferred Tax Liabilities [Member] | Fiscal Year 2011 [Member]
Increase (Decrease) in Working Capital	$ (62)