Inventories

3 Months Ended

Mar. 31, 2020

Inventories consist of the following:



(In thousands)	March 31 2020		December 31 2019
Finished goods	$	13,138	$	14,550
Work-in-process	10,795		13,088
Raw materials and purchased parts	118,637		104,488
Stores and supplies	25,320		24,865
Total inventories	$	167,890	$	156,991

During 2016 the Company recognized an initial estimated forward loss provision related to the contracts with the federal railway system of Switzerland ("SBB") of $45.1 million. The Company recorded an additional forward loss provision of $1.8 million during 2018. At March 31, 2020 the entire remaining estimated forward loss provision of $6.4 million is included as Other current liabilities on the Company's Condensed Consolidated Balance Sheets. The estimated forward loss provision represents the Company's best estimate based on currently available information. It is possible that the Company's overall estimate of costs to complete these contracts may increase, which would result in an additional estimated forward loss provision at such time.

The Company recognized $10.1 million and $4.7 million of revenues for the contracts with SBB at zero margin, on an over time basis, utilizing a cost-to-cost method for the three months ended March 31, 2020 and 2019, respectively. For the three months ended March 31, 2020 and 2019 consolidated product revenue gross margins were not significantly impacted by the revenue recognized under the SBB contracts. The Company has substantially completed the first contract and is approximately 50% complete on the second contract with SBB as of March 31, 2020.