Stock-Based Compensation Plans Market Stock Units (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
MSU Expense	$ 1,200,000	$ 1,200,000
Number of Market Stock Units
Outstanding on December 31, 2018	193,135
Granted	41,855
Exchanged for stock	(89,179)
Outstanding on December 31, 2019	139,643	193,135
Maximum Shares Potentially Issuable
Outstanding on December 31, 2018	279,542
Granted	62,784
Exchanged for stock	(128,573)
Outstanding on December 31, 2019	178,118	279,542
MSUs Cancelled	(6,168)	(9,252)
MSU Shares Maximum vs Earned	0
MSU Potential Common Shares Issuable Change	(26,383)
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential Shares From MSU Vest	$ 0
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential Shares From MSU Vest	$ 1.50
Trading days	60 days