Note 4 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Notes Tables

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	Amounts at		Fair Value Measurement Using
	Fair Value		Level 1		Level 2		Level 3
As of March 31, 2018
Contingent consideration liability	$	6,992	$	-	$	-	$	6,992

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Three Months Ended March 30, 2018
Balance at beginning of period	$	5,744
Fair value adjustment		1,726
Transfer of contingent consideration liability to earnout payable		(478	)
Balance at end of period	$	6,992