Note 14 - Severance Costs (Details Textual) - USD ($)	1 Months Ended	3 Months Ended			6 Months Ended	12 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2015	Jun. 30, 2016
Chief Executive Officer [Member] | Reclassification From Liability [Member]
Other Noncash Income	$ 576,000
Chief Executive Officer [Member]
Severance Costs				$ 800,000
Payments for Postemployment Benefits					$ 224,000
Increase (Decrease) in Self Insurance Reserve		$ 1,000,000
Facility Closing [Member]
Business Exit Costs			$ 21,200
Graphics Segment [Member]
Severance Costs						$ 469,000
Severance Costs			$ 340,000
Percent Of Reduction Of Workforce	8.30%		8.30%		8.30%
Employee Related Reduction In Annual Compensation And Benefits			$ 3,700,000