Note 6 - Restructuring and Related Reorganization Costs (Details Textual) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Severance Costs	$ 553	$ 1,171
Restructuring Reserve	3,236	8,240	$ 3,916	$ 8,597
Employee Severance [Member] | WD Services [Member] | Ingeus Acquisition [Member]
Number of Severance Plans			3
Employee Severance [Member] | WD Services [Member] | Ingeus Acquisition [Member] | Accrued Expenses [Member]
Severance Costs	553	$ 1,171
Restructuring Reserve	$ 3,236