|12 Months Ended|
Mar. 31, 2019
5. Intangible Assets
Intangible assets consisted of the following (in thousands):
Amortization expense for the intangible assets was $0.2 million and $0.3 million for the fiscal years ended March 31, 2019 and 2018, respectively.
Expected future amortization expense of intangible assets as of March 31, 2019 is as follows (in thousands):
The manufacturing license provides the Company with the ability to manufacture recuperator cores previously purchased from Solar Turbines Incorporated (“Solar”). The Company is required to pay a per‑unit royalty fee for the life of Capstone’s patents for cores manufactured and sold by the Company using the technology. Royalties of approximately $33,200 and $30,900 were earned by Solar for the fiscal years ended March 31, 2019 and 2018, respectively. Earned royalties of approximately $26,100 and $8,000 were unpaid as of March 31, 2019 and 2018, respectively, and are included in accrued expenses in the accompanying balance sheets.
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef