Fair Value of Financial Instruments (Tables)
|12 Months Ended|
Dec. 31, 2018
|Fair Value of Financial Instruments [Abstract]|
|Carrying Amounts of Financial Instruments||
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