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Equity Compensation Plans - Options (Details) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Equity Compensation Plans
Total compensation cost		$ 1.9	$ 1.7
Exercised (in shares)	4,500
Shares
Exercised (in shares)	(4,500)
Aggregate Intrinsic Value
Exercised (in dollars)	$ (27,000)
2014 Plan
Equity Compensation Plans
Number of shares authorized	600,000	600,000
Employee and Nonemployee Stock Options [Member]
Equity Compensation Plans
Granted (in shares)			0
Term of stock options granted		10 years
Exercised (in shares)		4,500
Total unrecognized compensation cost	$ 0	$ 0
Shares
Beginning outstanding (in shares)		4,500
Exercised (in shares)		(4,500)
Ending outstanding (in shares)				4,500
Weighted Average Exercise Price
Beginning outstanding (in dollars per share)		$ 7.49
Exercised (in dollars per share)	$ 7.49
Ending outstanding (in dollars per share)				$ 7.49
Weighted Average Remaining Contractual Term (years)
Ending outstanding (in years)		0 years		1 month 6 days
Aggregate Intrinsic Value
Ending outstanding (in dollars)				$ 25,000
Restricted Stock and Restricted Stock Units [Member]
Equity Compensation Plans
Vesting period		3 years

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