Long-Term Debt - Interest Rate Swap (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	$ (531)	$ (469)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated OCI beginning balance	975	965
Unrealized gain on derivatives	(1,445)	479
Accumulated OCI ending balance	(1,001)	975	$ 965
Gains expected to be realized from accumulated OCI during the next 12 months	531
Unrealized Gain on Derivatives, Tax	397	(73)	$ (320)
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months		0
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Unrealized Gain on Derivatives, Tax	$ (4)	$ 393