Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($) |
12 Months Ended | |
---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Interest Rate Swap | ||
Derivative [Line Items] | ||
Derivative, Fair Value, Net | $ 400,000 | |
Rate | Designated as Hedging Instrument | Interest Rate Swap December 2016 | ||
Derivative [Line Items] | ||
Derivative, Notional Amount | $ 50,000,000,000,000 | $ 50,000,000,000,000 |
Rate | 1.59% | 1.59% |
Rate | Designated as Hedging Instrument | Interest Rate Swap June 2018 | ||
Derivative [Line Items] | ||
Derivative, Notional Amount | $ 20,000,000,000,000 | $ 20,000,000,000,000 |
Rate | 2.98% | 2.98% |
Rate | Designated as Hedging Instrument | Interest Rate Swap | ||
Derivative [Line Items] | ||
Derivative, Notional Amount, Increase At Maturity | $ 70,000,000 | |
Other Noncurrent Assets | Interest Rate Swap | ||
Derivative [Line Items] | ||
Derivative, Fair Value, Net | 500,000 | |
Other Noncurrent Liabilities | Interest Rate Swap | ||
Derivative [Line Items] | ||
Derivative, Fair Value, Net | $ 900,000 |