Note 4 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017
Contingent consideration liability	$	3,574	$	-	$	-	$	3,574

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

	Three Months Ended September 30, 2017			Nine Months Ended September 30, 2017
Balance at beginning of period	$	4,123		$	-
Contingent consideration liability established in connection with the acquisition of Ambrell		-			4,123
Fair value adjustment		(549	)		(549	)
Balance at end of period	$	3,574		$	3,574