Note 5 - Estimated Future Amortization Expense (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Technology-Based Intangible Assets [Member]
Finite-lived intangible assets, amortization expense, next twelve months	$ 223
Finite-lived intangible assets, amortization expense, year two	223
Finite-lived intangible assets, amortization expense, year three	223
Finite-lived intangible assets, amortization expense, year four	223
Finite-lived intangible assets, amortization expense, year five	195
Finite-lived intangible assets, amortization expense, after year five	390
Finite-lived intangible assets, net	1,477
Customer-Related Intangible Assets [Member]
Finite-lived intangible assets, amortization expense, next twelve months	3,183
Finite-lived intangible assets, amortization expense, year two	2,362
Finite-lived intangible assets, amortization expense, year three	1,035
Finite-lived intangible assets, amortization expense, year four	738
Finite-lived intangible assets, amortization expense, year five	533
Finite-lived intangible assets, amortization expense, after year five	580
Finite-lived intangible assets, net	8,431
Employment Related Intangible Assets [Member]
Finite-lived intangible assets, amortization expense, next twelve months	325
Finite-lived intangible assets, amortization expense, year two	325
Finite-lived intangible assets, net	650
Finite-lived intangible assets, amortization expense, next twelve months	3,731
Finite-lived intangible assets, amortization expense, year two	2,910
Finite-lived intangible assets, amortization expense, year three	1,258
Finite-lived intangible assets, amortization expense, year four	961
Finite-lived intangible assets, amortization expense, year five	728
Finite-lived intangible assets, amortization expense, after year five	970
Finite-lived intangible assets, net	$ 10,558