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Inventories | 3 Months Ended
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Mar. 31, 2018
Inventory Disclosure [Abstract] |
Inventories | 2. Inventories Inventories were as follows:
(U.S. Dollars, in thousands) |  | March 31, 2018 |  |  | December 31, 2017 |
Raw materials |  | $ | 5,889 |  |  | $ | 6,067 |
Work-in-process |  |  | 13,666 |  |  |  | 12,487 |
Finished products |  |  | 58,131 |  |  |  | 60,441 |
Deferred cost of sales |  |  | — |  |  |  | 2,335 |
Inventories |  | $ | 77,686 |  |  | $ | 81,330 |
Prior to the adoption of ASU 2014-09, or for all periods presented prior to January 1, 2018, deferred cost of sales resulted from transactions where the Company had shipped product or performed services for which all revenue recognition criteria had not yet been met. Once all revenue recognition criteria had been met, the revenue and associated cost of sales were recognized. Subsequent to the adoption of ASU 2014-09, the Company no longer has transactions which result in the recognition of deferred cost of sales. See Note 7 for further discussion of the Company’s adoption of ASU 2014-09.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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