CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Subordinated notes interest rate	6.25%	6.25%
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	15,000,000	15,000,000
Common stock, issued (in shares)	5,583,492	5,577,559