Note 3 - Business Combinations (Details) (USD $)	6 Months Ended	1 Months Ended
	Jun. 30, 2014	Apr. 23, 2014 FineLine Prototyping, Inc. [Member]	Jun. 30, 2014 FineLine Prototyping, Inc. [Member]
Note 3 - Business Combinations (Details) [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 33,864,000	$ 33,864,000
Proceeds from Sale of Held-to-maturity Securities		15,500,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		3,000,000
Business Combination, Consideration Transferred		36,864,000
Business Combination, Contingent Consideration, Liability		$ 3,000,000	$ 2,600,000