Retirement Plans - Schedule of Fair Value of Pension Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	$ 170,215	$ 32,853
Cash
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	3,579
U.S. Treasury and government sponsored agency bonds and notes
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	86,952
Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	69,845
Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	6,718
Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	2,346
Other
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	775
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Cash
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		83
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		21,566
Fair Value, Inputs, Level 1, 2 and 3 [Member] | U.S. Treasury Bills
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		2,993
Fair Value, Inputs, Level 1, 2 and 3 [Member] | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		3,399
Level 1
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	74,199	24,642
Level 1 | Cash
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	3,579	83
Level 1 | U.S. Treasury and government sponsored agency bonds and notes
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0
Level 1 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	69,845	21,566
Level 1 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0
Level 1 | U.S. Treasury Bills
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		2,993
Level 1 | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 1 | Other
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	775
Level 2
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	96,016	3,399
Level 2 | Cash
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 2 | U.S. Treasury and government sponsored agency bonds and notes
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	86,952
Level 2 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 2 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	6,718
Level 2 | U.S. Treasury Bills
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		0
Level 2 | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	2,346	3,399
Level 2 | Other
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0
Level 3
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 3 | Cash
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 3 | U.S. Treasury and government sponsored agency bonds and notes
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0
Level 3 | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 3 | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0
Level 3 | U.S. Treasury Bills
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		0
Level 3 | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	0	0
Level 3 | Other
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value	$ 0
Fair Value Measured at Net Asset Value Per Share | Collective investment fund (measured at NAV of units as a practical expedient)
Defined Benefit Plan Disclosure [Line Items]
Total investments at fair value		$ 4,812