Note 9— Inventory

Inventory consisted of the following (in thousands):



	March 31, 2017		December 31, 2016
Components and subassemblies	$	28,494	$	31,695
Work in process	44,651		39,894
Finished goods	40,470		16,665
Total	$	113,615	$	88,254

Finished goods inventory of $32.1 million and $10.5 million was located at customer sites pending acceptance as of March 31, 2017 and December 31, 2016, respectively. At March 31, 2017, one customer accounted for $34.7 million of finished goods inventory, and at December 31, 2016, two customers accounted for $11.9 million of finished goods inventory.

During the three months ended March 31, 2016, the Company wrote off $0.6 million of inventory. The Company did not write off any inventory during the three months ended March 31, 2017.