Investments and Fair Value Measurements (Tables)
|9 Months Ended|
Sep. 30, 2018
|Fair Value Disclosures [Abstract]|
|Category of Financial Instruments Not Held at Fair Value||
At September 30, 2018 and December 31, 2017, financial instruments that are not held at fair value are categorized in the table below:
Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef