Note 4 - Goodwill and Intangible Assets (Detail) - Further Detail About Intangible Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Net Carrying Amount	$ 1,897	$ 432
Total intangible assets	2,407	942
Gross Carrying Amounts [Member] | Trademarks [Member]
Gross Carrying Amount	510	510
Net Carrying Amount	510	510
Gross Carrying Amounts [Member] | Customer Relationships [Member]
Gross Carrying Amount	1,480	370
Gross Carrying Amounts [Member] | Patented Technology [Member]
Gross Carrying Amount	590	230
Gross Carrying Amounts [Member] | Computer Software, Intangible Asset [Member]
Gross Carrying Amount	270	270
Gross Carrying Amounts [Member] | Trade Names [Member]
Gross Carrying Amount	140
Gross Carrying Amounts [Member] | Customer Backlog [Member]
Gross Carrying Amount	70
Gross Carrying Amounts [Member] | Noncompete Agreements [Member]
Gross Carrying Amount	48
Gross Carrying Amounts [Member]
Gross Carrying Amount	2,598	870
Total intangible assets	3,108	1,380
Total intangible assets	3,108	1,380
Accumulated Amortization [Member] | Customer Relationships [Member]
Accumulated Amortization	316	200
Total intangible assets	316	200
Accumulated Amortization [Member] | Patented Technology [Member]
Accumulated Amortization	190	150
Total intangible assets	190	150
Accumulated Amortization [Member] | Computer Software, Intangible Asset [Member]
Accumulated Amortization	101	88
Total intangible assets	101	88
Accumulated Amortization [Member] | Trade Names [Member]
Accumulated Amortization	16
Total intangible assets	16
Accumulated Amortization [Member] | Customer Backlog [Member]
Accumulated Amortization	70
Total intangible assets	70
Accumulated Amortization [Member] | Noncompete Agreements [Member]
Accumulated Amortization	8
Total intangible assets	8
Accumulated Amortization [Member]
Accumulated Amortization	701	438
Total intangible assets	701	438
Net Carrying Amount [Member] | Trademarks [Member]
Gross Carrying Amount	510	510
Net Carrying Amount	510	510
Net Carrying Amount [Member] | Customer Relationships [Member]
Net Carrying Amount	1,164	170
Net Carrying Amount [Member] | Patented Technology [Member]
Net Carrying Amount	400	80
Net Carrying Amount [Member] | Computer Software, Intangible Asset [Member]
Net Carrying Amount	169	182
Net Carrying Amount [Member] | Trade Names [Member]
Net Carrying Amount	124
Net Carrying Amount [Member] | Noncompete Agreements [Member]
Net Carrying Amount	40
Net Carrying Amount [Member]
Net Carrying Amount	1,897	432
Total intangible assets	$ 2,407	$ 942