Note 9 - Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended March 31,
	2019			2018
Balance at beginning of period	$	4,564		$	2,416
Warranty provision for product sales		268			1,479
Settlements made		(2,271	)		(55	)
Unused warranty provision		(516	)		(100	)
Balance at end of period	$	2,045		$	3,740

Purchase Commitments

The Company has outstanding purchase commitments with its suppliers and other parties that require the future purchase of goods or services, which primarily consist of wafer purchases, assembly and other manufacturing services, construction services and license arrangements. As of March 31, 2019, the Company’s outstanding purchase obligations totaled approximately

$79.1

 million.